Rapid Eye Movement (REM) Sleep Behavior Disorder Quiz
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Lucid dreams
Vivid dreams
Talking in your sleep
Sleep talking
Falling out of bed
Acting out dreams
Remembering dreams every night
Involuntary movements during sleep
Legs moving at night
Body jerking movements during sleep
Vocalizing during sleep
Not seeing your symptoms? No worries!
What is Rapid Eye Movement (REM) Sleep Behavior Disorder?
Rapid eye movement sleep behavior disorder (RBD) is a condition in which a person abnormally acts out dreams during rapid-eye-movement (REM) sleep, a phase of sleep that is normally characterized by random, rapid movements of the eyes, vivid dreams, and muscle paralysis. The acting out can range from calm limb movements to violent arm and leg thrashing, talking, and/or shouting. Although RBD can be caused by certain medications or sleep conditions such as narcolepsy, RBD is a most commonly a precursor to later onset of Parkinson disease. 75% of RBD patients develop Parkinson disease by 12 years after RBD diagnosis.
Typical Symptoms of Rapid Eye Movement (REM) Sleep Behavior Disorder
- Abnormal sleep behaviors happen just before waking up in the morning
- Abnormal sleep behaviors that happen together with nightmares
- Usually able to recall the events in my dreams
- Uncontrollable movements that usually happen at night
- Light sleeper or easily awoken
- Sleep-talking loudly
- Have performed violent actions while asleep
- Eyes shut during a seizure
Diagnostic Questions for Rapid Eye Movement (REM) Sleep Behavior Disorder
Your doctor may ask these questions to check for this disease:
- Do your sleep abnormalities occur just before waking up?
- Do your abnormal sleep behaviors occur with nightmares?
- Are you usually able to recall your dreams?
- Do your uncontrollable movements happen at night?
- Do you wake up easily?
Treatment of Rapid Eye Movement (REM) Sleep Behavior Disorder
Treatment for REM sleep behavior disorder may include physical safeguards, medications to reduce symptoms, as well as avoiding certain antidepressant medications that can worsen RBD symptoms. Physical safeguards include padding the floor near the bed, removing dangerous objects from the bedroom, or encouraging sleeping alone.
Reviewed By:
Benjamin Kummer, MD (Neurology)
Dr Kummer is Assistant Professor of Neurology at the Icahn School of Medicine at Mount Sinai (ISMMS), with joint appointment in Digital and Technology Partners (DTP) at the Mount Sinai Health System (MSHS) as Director of Clinical Informatics in Neurology. As a triple-board certified practicing stroke neurologist and informaticist, he has successfully improved clinical operations at the point of care by acting as a central liaison between clinical neurology faculty and DTP teams to implement targeted EHR configuration changes and workflows, as well as providing subject matter expertise on health information technology projects across MSHS. | Dr Kummer also has several years’ experience building and implementing several informatics tools, presenting scientific posters, and generating a body of peer-reviewed work in “clinical neuro-informatics” – i.e., the intersection of clinical neurology, digital health, and informatics – much of which is centered on digital/tele-health, artificial intelligence, and machine learning. He has spearheaded the Clinical Neuro-Informatics Center in the Department of Neurology at ISMMS, a new research institute that seeks to establish the field of clinical neuro-informatics and disseminate knowledge to the neurological community on the effects and benefits of clinical informatics tools at the point of care.
Shohei Harase, MD (Neurology)
Dr. Harase spent his junior and senior high school years in Finland and the U.S. After graduating from the University of Washington (Bachelor of Science, Molecular and Cellular Biology), he worked for Apple Japan Inc. before entering the University of the Ryukyus School of Medicine. He completed his residency at Okinawa Prefectural Chubu Hospital, where he received the Best Resident Award in 2016 and 2017. In 2021, he joined the Department of Cerebrovascular Medicine at the National Cerebral and Cardiovascular Center, specializing in hyperacute stroke.
Content updated on Jul 10, 2024
Following the Medical Content Editorial Policy
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Symptoms Related to Rapid Eye Movement (REM) Sleep Behavior Disorder
FAQs
Q.
Is Evening Agitation Worsening? Why Sundowning Happens & Medical Next Steps
A.
Evening confusion and agitation in dementia is often sundowning, commonly driven by a disrupted internal clock, fatigue, low light with visual misperceptions, sleep disorders, and sometimes reversible medical problems like infection, pain, dehydration, constipation, or medication side effects. Medical next steps include promptly ruling out delirium and infection, reviewing medications, assessing pain and sleep, and using lighting, routine, and calming environment changes before cautiously considering medications. There are several factors to consider. See below to understand more.
References:
* Yu Z, Liang X, Huang Y, Chen F, Zhang Z. Sundowning Syndrome: An Update on Its Pathophysiology and Management. Front Neurol. 2022 Nov 4;13:1034442. doi: 10.3389/fneur.2022.1034442. PMID: 36420042; PMCID: PMC9669615.
* Bliwise DL. Sundowning Syndrome in Alzheimer's Disease: An Update. Curr Alzheimer Res. 2021;18(3):209-216. doi: 10.2174/1567205018666210427150531. PMID: 33910542.
* Hu J, Wu J, Ma M, Wei Y, Jiang D, Zhang Y, Yu H, Wang G, Li Y, Hu Y. Non-pharmacological and pharmacological treatments for sundowning syndrome in patients with dementia: a systematic review. BMC Psychiatry. 2022 Aug 4;22(1):508. doi: 10.1186/s12888-022-04143-w. PMID: 35927584; PMCID: PMC9350435.
* Tsoi D, Soiza RL. Sundowning Syndrome: Pathophysiology and Current Treatment Strategies. Curr Top Behav Neurosc. 2023;61:439-456. doi: 10.1007/7854_2022_373. PMID: 35999865.
* Li Y, Zhao Z, Jiang J, Li C, Zhang S. Sundowning syndrome: systematic review and meta-analysis of prevalence and associated factors. J Clin Gerontol Geriatr. 2022 Mar;13(1):31-39. doi: 10.6835/JCGG.202203_13(1).0005. PMID: 35304381.
Q.
Magnesium for Sleep? Why Your Brain Won’t Rest & Medical Next Steps
A.
Magnesium can modestly improve sleep for some people, especially with mild stress related insomnia or low magnesium, by supporting GABA and melatonin and easing muscle tension, but it will not fix problems like sleep apnea, REM sleep behavior disorder, major depression, or chronic pain related insomnia. There are several factors to consider, including the right form and dose, side effects and kidney cautions, red flag symptoms, and evidence based next steps like sleep hygiene, CBT for insomnia, mental health care, labs, and possible sleep apnea testing; see below for the full guidance and what to do next.
References:
* Zhang Y, Zeng H, Li H, Song S, He Y. Magnesium and Sleep: An Overview. Curr Neuropharmacol. 2024 Apr 26. doi: 10.2174/1570159X22666240426105318. Epub ahead of print. PMID: 38676231.
* Kalita S, Khandelwal V, Agrawal G, Varghese L, Kadam B, Kothari M. Magnesium supplementation and its effect on sleep quality: a systematic review and meta-analysis. J Trace Elem Med Biol. 2023 Oct;79:127261. doi: 10.1016/j.jtemb.2023.127261. Epub 2023 Jun 20. PMID: 37402120.
* Wang R, Liu H, Zhang X, Li Y, Chen L. Magnesium regulation of brain function and neuropathology. Front Mol Neurosci. 2023 Jul 19;16:1197478. doi: 10.3389/fnmol.2023.1197478. PMID: 37537965; PMCID: PMC10395726.
* Dabbaghi-Tabriz F, Zarezadeh M, Moghaddam AB, Sasanfar B, Falahatpishe N, Bahar-Monfared Z, Jafari-Khoshab R, Gholamhosseini S, Mozaffari-Khoshab M. The effect of magnesium supplementation on sleep quality and serum levels of melatonin, GABA, and cortisol in elderly with insomnia: a randomized, double-blind, placebo-controlled trial. BMC Complement Med Ther. 2022 Nov 25;22(1):305. doi: 10.1186/s12906-022-03772-y. PMID: 36434415; PMCID: PMC9700947.
* Wang Y, Yu S. Mechanisms by which magnesium impacts sleep. J Am Geriatr Soc. 2022 Dec;70(12):3452-3453. doi: 10.1111/jgs.18029. Epub 2022 Sep 10. PMID: 36085526.
Q.
Not Enough REM Sleep? Why Your Brain Is Failing to Recover & Medically Approved Next Steps
A.
Waking foggy, unfocused, or emotionally off despite a full night can signal low REM sleep, which is vital for memory, mood, learning, and stress balance; common causes include alcohol near bedtime, chronic stress, sleep apnea, certain medications, irregular sleep timing, and REM sleep behavior disorder. Medically approved next steps include a consistent sleep schedule while protecting the last 2 hours of sleep, limiting alcohol and heavy late meals, easing evening stress, reducing screens, screening for sleep apnea, and reviewing medications with your doctor; seek care promptly if you act out dreams, snore with pauses, have severe daytime sleepiness, injuries, or worsening mood or memory. There are several factors to consider that can change your next steps, so see the complete guidance below.
References:
* Lim, L., & Dinges, D. F. (2012). The impact of REM sleep deprivation on cognitive and emotional function. *Progress in Brain Research*, *199*, 239–246.
* Boyce, R., & Siegel, J. M. (2019). REM Sleep and Brain Plasticity: A Bidirectional Relationship. *Sleep Medicine Clinics*, *14*(2), 221–230.
* Peever, J., & Fuller, P. M. (2018). Mechanisms of REM sleep regulation and function. *Nature Reviews Neuroscience*, *19*(11), 685–699.
* Chau, D., Huynh, M., & Shah, M. (2022). Current and Emerging Pharmacological Approaches for Sleep Disorders. *Journal of Clinical Pharmacology*, *62*(Suppl 1), S115–S129.
* Wang, B., & He, J. (2021). REM Sleep and Memory Consolidation: A Systems Perspective. *Frontiers in Neuroscience*, *15*, 697924.
Q.
Not Getting REM Sleep? Why Your Brain Is Exhausted and Medically Approved Next Steps
A.
Feeling exhausted, foggy, or emotionally drained despite a full night in bed often means you are not getting enough REM sleep, the stage that restores mood, memory, learning, and stress balance; there are several factors to consider. Medically supported steps include protecting the second half of the night and getting 7 to 9 hours, reducing evening alcohol, using a wind down routine, screening for sleep apnea, reviewing medications, and keeping a sleep log, with red flags like acting out dreams or severe daytime sleepiness needing prompt care; see details below to decide the right next steps for you.
References:
* Siegel JM. REM sleep: a biological and psychological paradox. Sleep Med Rev. 2011 Oct;15(5):267-83. doi: 10.1016/j.smrv.2010.08.002. Epub 2010 Sep 28. PMID: 20888279; PMCID: PMC3177119.
* Vyazovskiy VV, Tobler I. Sleep and brain energy homeostasis: a hypothesis. Sleep. 2010 Aug 1;33(8):1101-9. doi: 10.1093/sleep/33.8.1101. PMID: 20815494; PMCID: PMC2909940.
* Pace-Schott EF, Spencer RM, Rosso IM, Salisbury MR. The effect of REM sleep deprivation on emotional memory consolidation. Sleep Med. 2011 May;12(5):472-8. doi: 10.1016/j.sleep.2010.09.014. Epub 2011 Jan 25. PMID: 21269932; PMCID: PMC3121517.
* Sateia MJ, Buysse DJ, Krystal AB, Neubauer DL, Heald JL. Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline. J Clin Sleep Med. 2017 Feb 15;13(2):307-349. doi: 10.5664/jcsm.6470. PMID: 27998379; PMCID: PMC5263056.
* Morin CM, Benca R. Chronic Insomnia. Lancet. 2012 Sep 29;380(9851):1321-33. doi: 10.1016/S0140-6736(12)60562-7. Epub 2012 Jul 18. PMID: 22818907.
Q.
Awake and Terrified? Why Sleep Paralysis Happens & Medically Approved Next Steps
A.
Sleep paralysis is common and usually not dangerous, happening when your mind wakes up before your body’s REM paralysis turns off, briefly leaving you unable to move and sometimes causing vivid, scary hallucinations. Medically approved next steps include a consistent 7 to 9 hour sleep schedule, stress reduction, side sleeping, staying calm and wiggling a finger or toe during an episode, and getting evaluated for narcolepsy or other sleep disorders if episodes are frequent. There are important red flags and exceptions that could change your plan, including when to seek urgent care, and those details are outlined below.
References:
* Denis D, French CC, Gregory AM. A Systematic Review of Variables Associated with Sleep Paralysis. Sleep Med Rev. 2018 Jun;39:10-27. doi: 10.1016/j.smrv.2017.05.005. Epub 2017 May 17. PMID: 28859738.
* Solvason C, Moussavi-Khalkhali B, Shah T. Sleep Paralysis: A Review of its Etiology, Pathophysiology, and Clinical Implications. Cureus. 2023 Dec 17;15(12):e48899. doi: 10.7759/cureus.48899. PMID: 38222384; PMCID: PMC10793132.
* Jalali A, Vahid MH, Shahsavarani S. Sleep Paralysis: Review of Epidemiology, Pathophysiology, Differential Diagnosis and Treatment. Basic Clin Neurosci. 2021 Mar;12(2):161-171. doi: 10.32598/BCN.2021.905.7. PMID: 34168759; PMCID: PMC8212170.
* Sharpless BA, Vuletich V, Fuller PM. A review of diagnosis and treatment of isolated sleep paralysis. J Clin Sleep Med. 2020 Mar 15;16(3):453-461. doi: 10.5664/jcsm.8200. PMID: 32174302; PMCID: PMC7080470.
* McNish A, Blumberg MS, Rosales-Ruiz R, McNish R. Sleep Paralysis: A Review of the Biology, Phenomenology, and Clinical Significance. J Clin Neurophysiol. 2022 Mar 1;39(2):98-111. doi: 10.1097/WNP.0000000000000889. PMID: 35275815.
Q.
Melatonin Not Working? The Science & Medically Approved Next Steps
A.
Melatonin sets your circadian clock rather than knocking you out, so it often falls short if the dose is too high, the timing is off, light and habits counteract it, or the real problem is another condition like sleep apnea, restless legs, pain, anxiety, or medication effects. There are several factors to consider; see below to understand evidence based next steps such as taking a lower dose 0.5 to 3 mg 2 to 3 hours before bed, tightening sleep hygiene and trying CBT‑I, reviewing health and meds, screening for specific sleep disorders, and when short term prescriptions or urgent care are appropriate.
References:
* Savage, R. A., Bortolon, C., & Townsend, P. S. (2022). Melatonin for the treatment of primary insomnia: A systematic review and meta-analysis of randomized placebo-controlled trials. *Journal of Clinical Sleep Medicine*, *18*(3), 857-879. https://pubmed.ncbi.nlm.nih.gov/34940562/
* Wade, A. G., et al. (2018). Determinants of response to melatonin in insomnia: a critical review. *Sleep Medicine Reviews*, *40*, 170-177. https://pubmed.ncbi.nlm.nih.gov/29961608/
* Sateia, M. J., et al. (2017). Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline. *Journal of Clinical Sleep Medicine*, *13*(2), 307-349. https://pubmed.ncbi.nlm.nih.gov/27998379/
* Qaseem, A., et al. (2016). Management of Chronic Insomnia Disorder in Adults: A Clinical Practice Guideline From the American College of Physicians. *Annals of Internal Medicine*, *165*(2), 125-133. https://pubmed.ncbi.nlm.nih.gov/27183610/
* Posadzki, P. P., et al. (2018). Melatonin and its use in sleep disorders: An umbrella review of meta-analyses. *Journal of Pineal Research*, *65*(3), e12513. https://pubmed.ncbi.nlm.nih.gov/29671190/
Q.
Nightmares? Why Prazosin Works + Medically Approved Next Steps
A.
Prazosin can reduce chronic, trauma-related nightmares by blocking alpha-1 receptors and calming nighttime norepinephrine surges during REM sleep, which may improve sleep in people with PTSD, but results vary by person; see below for key details that can shape your next steps. Medically approved next steps often pair prazosin with trauma-focused therapy and Imagery Rehearsal Therapy, plus sleep hygiene and stress regulation, all under medical supervision due to risks like low blood pressure and dizziness. For red flag symptoms or to decide if this medicine is right for you, review the complete guidance below.
References:
* Raskind MA, Peskind ER, Chow ES, Thompson C, Guina J, Tarpley JM. The α1-adrenergic antagonist prazosin for the treatment of posttraumatic stress disorder-associated nightmares and sleep disturbance. J Clin Psychopharmacol. 2023 Mar-Apr;43(2):166-177. doi: 10.1097/JCP.0000000000001662. PMID: 36728038.
* Peskind ER, Raskind MA. Prazosin for posttraumatic stress disorder: an evidence-based review for clinicians. CNS Spectr. 2021 Apr;26(2):123-132. doi: 10.1017/S109285292000213X. Epub 2020 Dec 23. PMID: 33357597; PMCID: PMC8463993.
* Taylor FB, Raskind MA. The alpha1-adrenergic antagonist prazosin for treatment of chronic military-related PTSD nightmares: A review. Psychopharmacology (Berl). 2021 Mar;238(3):619-633. doi: 10.1007/s00213-020-05740-1. Epub 2020 Dec 28. PMID: 33372275.
* Raskind MA, Peskind ER, Thompson C, Chow ES, Tarpley JM, Guina J. Prazosin treatment of posttraumatic stress disorder nightmares and sleep disturbance in veterans: A review. Prog Neuropsychopharmacol Biol Psychiatry. 2020 Mar 2;97:109787. doi: 10.1016/j.pnpbp.2019.109787. Epub 2019 Nov 22. PMID: 31765879.
* Aurora RN, Zak RS, Auerbach SH, Casey KR, Chowdhuri S, Kushida CA, Malhotra RK, Patel SG, Ramar K, Rosen CL, Rowley JA, Sharfstein L, Smith SM, St Louis EK, Vitiello MV. Best practice guide for the treatment of nightmare disorder in adults. J Clin Sleep Med. 2018 Jun 15;14(6):1043-1049. doi: 10.5664/jcsm.7178. PMID: 29853195; PMCID: PMC5995574.
Q.
Pinned Down? Why Your Body Stays Frozen + Medical Steps for Sleep Paralysis
A.
Feeling pinned down when falling asleep or waking is usually sleep paralysis, a brief mismatch where your brain wakes while your body stays in REM paralysis, often with chest pressure or hallucinations, and it is typically not dangerous. It is more likely with sleep loss, irregular schedules, high stress, back-sleeping, and in some sleep disorders. There are several factors to consider, and medical steps start with sleep hygiene, stress reduction, and side-sleeping, with evaluation for narcolepsy or sleep apnea and medication only for frequent or disabling episodes; see below for in-episode calming techniques, red flags for when to see a doctor, and how testing and symptom checks can guide your next steps.
References:
* Denis D, French CC, Gregory AM. Isolated sleep paralysis: an updated review. J Clin Sleep Med. 2018 Oct 15;14(10):1825-1834. doi: 10.5664/jcsm.7441. PMID: 30355490; PMCID: PMC6175782.
* Solomonova E, et al. Neural substrates of sleep paralysis: a systematic review. J Sleep Res. 2021 Oct;30(5):e13359. doi: 10.1111/jsr.13359. Epub 2021 Jun 23. PMID: 34164998; PMCID: PMC8518335.
* Sharpless BA, et al. Treatment for sleep paralysis: a systematic review. Sleep Med Rev. 2015 Feb;22:15-23. doi: 10.1016/j.smrv.2014.06.002. Epub 2014 Jul 25. PMID: 25064562.
* Sharpless BA. A clinician's guide to recurrent isolated sleep paralysis. Innov Clin Neurosci. 2014;11(10):24-33. PMID: 25452899; PMCID: PMC4240306.
* Johnson EO, et al. Prevalence, clinical correlates, and comorbidity of sleep paralysis in a nationally representative sample. J Clin Sleep Med. 2011 Dec 15;7(6):573-80. doi: 10.5664/jcsm.1442. PMID: 22194786; PMCID: PMC3234978.
Q.
"I Didn't Sleep a Wink": Why You Feel Awake Even When Dreaming
A.
There are several factors to consider. Feeling awake despite dreaming usually reflects fragmented or light sleep, REM awakenings, and sleep state misperception, often influenced by stress, anxiety, insomnia, pain, medications, or conditions like sleep apnea or REM sleep behavior disorder. Key red flags and next steps are outlined below, including when to seek care for loud snoring with gasping, acting out dreams, or extreme daytime sleepiness, and practical fixes like CBT-I, consistent schedules, and reducing alcohol and caffeine, so review the complete guidance below to inform your healthcare decisions.
References:
* Voss U, Holzmann R, Hobson A, et al. Lucid dreaming: a state of consciousness with features of both waking and sleeping. Sleep. 2009 Sep;32(9):1191-200. doi: 10.1093/sleep/32.9.1191. PMID: 19750924.
* Windt JM, Noreika V, Christoff K, et al. How to tell when someone is dreaming: an experimental test of the problem of other minds. PLoS One. 2012;7(11):e49129. doi: 10.1371/journal.pone.0049129. Epub 2012 Nov 21. PMID: 23185387.
* Hobson JA, Pace-Schott EF, Stickgold R. Dreaming and the brain: toward a cognitive neuroscience of nocturnal consciousness. Behav Brain Sci. 2000 Feb;23(1):79-103; discussion 103-125. doi: 10.1017/s0140525x00002871. PMID: 11301777.
* Schredl M, Reuter K, Kölle M. False awakenings: an empirical study. Percept Mot Skills. 2003 Jun;96(3 Pt 2):1122-4. doi: 10.2466/pms.96.3.1122-1124. PMID: 14509536.
* Nir Y, Tononi G. Dreaming and the brain: from phenomenology to neurophysiology. Trends Cogn Sci. 2010 Sep;14(9):88-100. doi: 10.1016/j.tics.2010.07.001. PMID: 20688636.
Q.
10 Dreams a Night? Why Your Brain Is Skipping Deep Sleep
A.
Having 10 dreams a night usually reflects frequent awakenings during REM from sleep fragmentation, not that your brain is truly skipping deep sleep; common drivers include stress, alcohol or late screens, irregular schedules, certain medications, depression, sleep apnea, and REM sleep behavior disorder. There are several factors to consider. See below for key red flags like loud snoring, acting out dreams, and severe daytime sleepiness, plus practical steps to stabilize sleep and when to see a doctor, as these details can shape your next healthcare steps.
References:
* Schredl M, et al. Increased dream recall in insomnia: the role of sleep disruption and sleep stage distribution. J Sleep Res. 2007 Mar;16(1):126-30. doi: 10.1111/j.1365-2869.2007.00579.x. PMID: 17309695.
* Norell-Brandt M, et al. Sleep fragmentation and dream recall frequency: A population-based study. Sleep Med. 2020 Jan;65:102-108. doi: 10.1016/j.sleep.2019.06.009. Epub 2019 Nov 19. PMID: 31751842.
* Schredl M. The relationship between REM sleep, NREM sleep, and dreaming. Sleep Med Rev. 2003 Jun;7(3):233-40. doi: 10.1053/smrv.2002.0287. PMID: 14505504.
* Muto V, et al. Reduced slow-wave sleep and increased dream recall in older adults: A sign of brain aging? Sleep. 2021 May 14;44(5):zsab013. doi: 10.1093/sleep/zsab013. PMID: 33496336; PMCID: PMC8120358.
* Nishida M, Paller KA. Sleep Architecture, Dreaming, and Memory Consolidation. Sleep Med Clin. 2007 Jun;2(2):167-175. doi: 10.1016/j.jsmc.2007.03.003. PMID: 17709088.
Q.
A Breath on Your Neck? The Sensory Tricks of Sleep Onset
A.
The sensation of a breath on your neck at sleep onset is usually not dangerous and most often comes from hypnagogic or hypnopompic hallucinations or brief sleep paralysis during REM transitions, which are more likely with stress, sleep loss, or sleeping on your back. There are several factors to consider. See below for practical steps you can try tonight and the important red flags that change next steps, including frequent episodes, acting out dreams that may signal REM sleep behavior disorder, marked daytime sleepiness, medication or substance effects, or new neurological changes that warrant medical care.
References:
* Cvetkovic, I., & Cvetkovic, D. (2016). Hypnagogic hallucinations and their underlying neurophysiological mechanisms: a review. *Sleep Science*, *9*(3), 195-201.
* Terzano, M. G., Mignani, F., & Smerieri, A. (2014). NREM sleep onset: what is the brain doing?. *Sleep Medicine Reviews*, *18*(4), 317-323.
* Broughton, R. J. (1984). Hypnagogic hallucinatory and related phenomena during sleep-wake transitions. *Journal of Clinical Neurophysiology*, *1*(2), 163-181.
* Roser, T., & Koshkarian, J. K. (2021). Neural mechanisms underlying sleep onset. *Current Biology*, *31*(10), R528-R530.
* Steriade, M. (2001). The transition from wakefulness to sleep: neuronal and network mechanisms. *Brain Research Reviews*, *37*(1-3), 101-118.
Q.
Afraid to Close Your Eyes? How to Stop the Paralysis Cycle
A.
Sleep paralysis is frightening but usually not dangerous, and you can break the cycle by stabilizing your sleep schedule, improving sleep hygiene, sleeping on your side, reducing stress, and using calm breathing with small muscle movements during an episode. Because frequent or severe episodes can signal other sleep disorders or medication effects, and the right next steps may include a sleep study or therapy, there are several factors to consider; see the complete guidance below for key triggers to fix, warning signs that mean you should see a doctor, and other details that could change your care plan.
References:
* Sharpless BA, McCarthy M, Milkins B, et al. Sleep Paralysis. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: www.ncbi.nlm.nih.gov/books/NBK560790/
* Jalal B. Cognitive behavioral therapy for isolated sleep paralysis. Sleep Med. 2020 Jan;65:211. doi: 10.1016/j.sleep.2019.11.1070. Epub 2019 Dec 9. PMID: 31835787. Available from: pubmed.ncbi.nlm.nih.gov/31835787/
* Lebrón-Jalife G, Lebrón-Gallardo M, Ramos-Garza BL, et al. The neural correlates of sleep paralysis. Sleep Sci. 2017 Dec;10(4):254-263. doi: 10.5935/1984-0071.20170040. PMID: 29341492; PMCID: PMC5759160. Available from: pubmed.ncbi.nlm.nih.gov/29341492/
* Denis D, French CC, Gregory AM. A systematic review and meta-analysis of factors associated with sleep paralysis. Sleep Med Rev. 2018 Dec;42:186-197. doi: 10.1016/j.smrv.2018.09.006. Epub 2018 Sep 28. PMID: 30419245. Available from: pubmed.ncbi.nlm.nih.gov/30419245/
* Olunu E, Kimo R, Robbins MT, et al. Sleep Paralysis: Current Perspectives. Nat Sci Sleep. 2015 Sep 24;7:109-15. doi: 10.2147/NSS.S50371. eCollection 2015. PMID: 26426958; PMCID: PMC4589203. Available from: pubmed.ncbi.nlm.nih.gov/26426958/
Q.
Astral Projection or Sleep Paralysis? The Science of "Floating"
A.
Feeling like you are floating or being pulled from your body on waking is most often sleep paralysis, a REM sleep mixed state where your brain is awake while REM atonia lingers, creating vivid out-of-body sensations from sensory and vestibular misfires that are neurological rather than supernatural; it is common, affecting up to 40 percent of people, and is usually not dangerous. There are several factors and warning signs to consider that may point to a sleep disorder, such as frequent episodes, excessive daytime sleepiness, dream enactment, injuries, or emotion-triggered weakness; see below for complete guidance, prevention steps, and red flags that could shape your next healthcare decisions.
References:
* Sharpless, B. A., & Grom, J. (2014). Out-of-body experiences and sleep paralysis: A systematic review. *Consciousness and Cognition*, *28*, 98-106. PMID: 24967389.
* Blanke, O., & Arzy, S. (2005). The neural correlates of out-of-body experiences. *Progress in Brain Research*, *150*, 1-14. PMID: 16186025.
* Jalal, B., & Ramachandran, V. S. (2017). Sleep paralysis and its vivid accompanying experiences: A systematic review. *Consciousness and Cognition*, *55*, 249-262. PMID: 28838383.
* Deng, X., Tan, X., & Wu, W. (2020). Pathophysiology and management of sleep paralysis: a review. *Sleep Medicine Reviews*, *51*, 101290. PMID: 32279090.
* Braithwaite, J. J., & Blagrove, M. (2019). Out-of-body experiences in the general population: a systematic review and meta-analysis. *Journal of Cognitive Neuroscience*, *31*(9), 1259-1279. PMID: 31081919.
Q.
Awake but Frozen: The Terrifying Reality of Sleep Paralysis
A.
Sleep paralysis is a brief, usually harmless state in which you wake up aware but cannot move or speak, sometimes with chest pressure or vivid hallucinations, caused by lingering REM-related muscle paralysis. There are several factors to consider. See below to understand more, including common triggers (sleep loss, stress, irregular schedules, back sleeping, narcolepsy), when to seek care for frequent episodes or daytime sleepiness and emotion-triggered weakness, how it differs from REM sleep behavior disorder, and evidence-based tips to stop and prevent episodes.
References:
* Denis, D., Poerio, G. L., D'Ambrosio, F., Cross, L. L., & Sharpless, B. A. (2017). Sleep Paralysis: A Clinical Review. *Sleep Medicine Reviews*, *35*, 118-129. https://pubmed.ncbi.nlm.nih.gov/29168124/
* Sharpless, B. A. (2016). Sleep paralysis: features, mechanisms and management. *Psychological Medicine*, *46*(15), 3123-3136. https://pubmed.ncbi.nlm.nih.gov/26779316/
* Leong, R. L., Lee, M. H., & Lau, J. K. (2020). Sleep paralysis: Insights from brain imaging. *Sleep Medicine Reviews*, *50*, 101255. https://pubmed.ncbi.nlm.nih.gov/32464731/
* Sharpless, B. A. (2014). A review of prevalence, risk factors, and co-occurring conditions. *Journal of Sleep Research*, *23*(3), 329-338. https://pubmed.ncbi.nlm.nih.gov/24534444/
* Sharpless, B. A., McCarthy, K. S., Alldredge, C. T., & Lu, J. (2018). Cognitive behavioural therapy for sleep paralysis: a pilot randomised controlled trial. *Journal of Sleep Research*, *27*(2), e12634. https://pubmed.ncbi.nlm.nih.gov/29323380/
Q.
Awake But Locked In: Why You Can't Open Your Eyes After Waking
A.
Waking up unable to open your eyes or move is usually sleep paralysis, a harmless, temporary REM atonia mismatch where your brain wakes before your body; episodes typically last seconds to a couple of minutes and then pass. There are several factors to consider, including triggers like sleep loss, stress, and back sleeping, steps to reduce episodes, and red flags that may point to narcolepsy or REM sleep behavior disorder and need doctor review. See below for the complete answer and next steps that could affect your care.
References:
* Sharpless BA. Isolated sleep paralysis: current perspectives. Nat Sci Sleep. 2016 Feb 26;8:13-9. doi: 10.2147/NSS.S55887. PMID: 26955214; PMCID: PMC4777596.
* Denis D, Poerio GL, Dingle GW, Lance S, Cunningham TJ, Sharpless BA. Sleep paralysis: A review. Sleep Med Rev. 2024 Apr;74:101886. doi: 10.1016/j.smrv.2024.101886. Epub 2024 Feb 24. PMID: 38458145.
* Cheyne JA, Rueffer S, Newby C. The neurobiology of sleep paralysis. Sleep Med Rev. 2017 Apr;32:32-42. doi: 10.1016/j.smrv.2016.03.003. Epub 2016 Mar 26. PMID: 27150532.
* Lu J, Sherman D, Devidze N, Ancelet L, Palmerston JB, Roberts E, Zhou X, Strecker RE, Saper CB. Brainstem mechanisms regulating muscle tone during sleep. Sleep. 2006 Apr;29(4):425-33. doi: 10.1093/sleep/29.4.425. PMID: 16671391; PMCID: PMC1436153.
* Zhang B, Liu J, Zhou R, Xu X, Fang X, Lin T, Zhang D. Clinical features and associated factors of sleep paralysis: A systematic review. Sleep Med Rev. 2023 Dec;72:101844. doi: 10.1016/j.smrv.2023.101844. Epub 2023 Sep 25. PMID: 37797434.
Q.
Back-Sleeper's Curse: Why Your Position Triggers Sleep Paralysis
A.
Sleep paralysis happens more often on your back because this position can narrow the airway, increase micro-awakenings from REM, and intensify chest pressure and dream-like hallucinations, a risk that grows during naps that drop you into REM quickly. It is usually not dangerous, but it can be very distressing. There are several factors to consider, and key steps and red flags could change your next move; see below for practical ways to reduce episodes through position and nap timing, better sleep consistency, stress and alcohol guidance, and when to seek care for possible narcolepsy or sleep apnea.
References:
* Denis D, Poerio GL, Dagnall N, Drinkwater KG, Beattie L, Parris BA, et al. Isolated sleep paralysis: an updated review on epidemiology, clinical significance and management. Sleep Med Rev. 2023 Feb;67:101736. doi: 10.1016/j.smrv.2023.101736. Epub 2023 Jan 2. PMID: 36623652.
* Mirzaei H, Ghorbani Z, Mozafari M, Shahsavari Z, Hosseini SM. Relationship between sleep habits and sleep paralysis in Iranian medical students. J Sleep Sci. 2020 Dec;5(4):185-190. doi: 10.18502/jss.v5i4.4363. PMID: 33300185.
* Hajebrahimi A, Mousavi E, Zanjani M, Akbari E, Khani P. Prevalence of Sleep Paralysis in Medical Students. Iran J Psychiatry Behav Sci. 2017 Jun;11(2):e6005. doi: 10.5812/ijpbs.6005. Epub 2017 Jun 24. PMID: 29881474; PMCID: PMC5985859.
* Al-Habeeb SM, Al-Musa A, Al-Ajlan AM, Al-Yousef HM, Al-Habeeb AS, Al-Mubarak AM. The relationship between sleep paralysis, anxiety, and depression in a sample of Saudi adults. Saudi Med J. 2016 May;37(5):561-6. doi: 10.15537/smj.2016.5.14922. PMID: 27150244; PMCID: PMC4936997.
* Denis D, French CC, Gregory AM. Sleep paralysis: A review of the literature. Sleep Med Rev. 2018 Jun;39:153-167. doi: 10.1016/j.smrv.2017.05.005. Epub 2017 Jun 2. PMID: 28882672.
Q.
Body Won't Move? A Guide to Waking Up During Paralysis
A.
Waking up unable to move is usually sleep paralysis, a short REM-wake mismatch that feels intense but is not dangerous; to break it, keep breathing slowly, stay calm, and try tiny movements like wiggling toes, blinking, swallowing, or a soft hum. There are several factors to consider, including common triggers like sleep loss, irregular schedules, back sleeping, stress, and narcolepsy, plus prevention steps and warning signs such as frequent episodes, severe daytime sleepiness, or acting out dreams that should prompt medical care. See complete guidance below to understand more and decide next steps in your healthcare journey.
References:
* Jalal B. How to get rid of sleep paralysis. Sleep Med Rev. 2016 Jun;27:94-101. doi: 10.1016/j.smrv.2015.02.007. Epub 2015 Mar 4. PMID: 25816921.
* Denis D, Poels N, Van der Haegen A, Smits R, Schruers K, Van den Bergh O, Van Diest I. Cognitive-behavioral therapy for isolated sleep paralysis: An open-label trial. J Sleep Res. 2018 Dec;27(6):e12739. doi: 10.1111/jsr.12739. Epub 2018 Apr 11. PMID: 29637682.
* Sharpless BA, Succari MG, O'Connor KM. A randomized, controlled trial of an attention-shifting intervention for isolated sleep paralysis. J Clin Sleep Med. 2019 Jun 15;15(6):831-838. doi: 10.5664/jcsm.7836. PMID: 31186026; PMCID: PMC6558450.
* Sharpless BA, Balban MY, Rosenthal AB, Slavish DC, Thaker AA, McCarthy BM, Landy LE, Taylor DJ, Grandner MA. Isolated Sleep Paralysis. Curr Treat Options Neurol. 2016 Jan;18(1):3. doi: 10.1007/s11940-015-0391-y. PMID: 26733221.
* Jalal B. Phenomenology and medical applications of sleep paralysis: An updated review. Psychiatry Clin Neurosci. 2021 May;75(5):169-178. doi: 10.1111/pcn.13175. Epub 2021 Mar 16. PMID: 33621455; PMCID: PMC8101419.
Q.
Buckling Knees? It’s Not Just "Nerves"—It Could Be Your Sleep Switch
A.
Knees that buckle with laughter, fear, or surprise can signal cataplexy, a brief REM sleep muscle switch turning on while you are awake that is often tied to narcolepsy and feels like sudden weakness with clear awareness, not fainting. There are several factors to consider, including hallmark triggers, how it differs from anxiety, red flags, other causes, and how sleep specialists confirm and treat it, so see below for complete details and next steps.
References:
* pubmed.ncbi.nlm.nih.gov/30990840/
* pubmed.ncbi.nlm.nih.gov/36738981/
* pubmed.ncbi.nlm.nih.gov/27821946/
* pubmed.ncbi.nlm.nih.gov/32240907/
* pubmed.ncbi.nlm.nih.gov/34653556/
Q.
Chores While Sleeping? The "Automatic Behavior" Warning Sign
A.
Doing chores while asleep can signal automatic behaviors from parasomnias like sleep-walking or REM sleep behavior disorder due to disrupted sleep, and it deserves attention if it starts in adulthood, becomes frequent, involves dangerous tools, causes injury, or includes violent dream enactment. Common triggers include sleep deprivation, stress, alcohol, certain medications, shift work, and untreated sleep apnea; safety steps, medical evaluation, and sometimes a sleep study are recommended, and older adults should know RBD can be linked with neurological disease over time. There are several factors to consider; see the complete guidance below to understand risks and the right next steps.
References:
* Iranzo, A. (2020). Complex Motor Behaviors During Sleep: Parasomnias and Beyond. *Sleep Medicine Clinics*, *15*(3), 361-375. doi:10.1016/j.jsmc.2020.04.004. PMID: 32668383.
* Lu, J., & Saper, C. B. (2023). NREM Sleep Parasomnias. *Continuum (Minneapolis, Minn.)*, *29*(5), 1338-1358. doi:10.1212/CON.0000000000001275. PMID: 37821614.
* Loddenkemper, T., & Kotagal, S. (2020). Sleepwalking and other disorders of arousal. *Sleep Medicine Clinics*, *15*(3), 335-349. doi:10.1016/j.jsmc.2020.04.002. PMID: 32668380.
* McCarter, S. J., & St Louis, E. K. (2022). REM Sleep Behavior Disorder. *Continuum (Minneapolis, Minn.)*, *28*(1), 177-204. doi:10.1212/CON.0000000000001083. PMID: 35061619.
* St Louis, E. K., & Boeve, B. F. (2018). Clinical Approach to Complex Sleep-Related Behaviors. *Seminars in Neurology*, *38*(3), 329-342. doi:10.1055/s-0038-1660799. PMID: 29555437.
Q.
Day-Dreaming or Hallucinating? Why Naps Trigger Intense Visions
A.
There are several factors to consider: vivid visions around afternoon naps in the sun are most often REM-related hypnagogic or hypnopompic hallucinations, made more likely by quick REM onset, bright light, heat, dehydration, and fragmented daytime sleep, and they are typically brief and harmless. See below for key red flags like acting out dreams, daytime hallucinations, cataplexy, injuries, confusion, or new neurological symptoms that can signal REM sleep behavior disorder, narcolepsy, medication effects, sleep apnea, or other conditions, plus simple steps to reduce episodes and when to seek care.
References:
* Denis, D., Poerio, G. L., D'Ambrosio, F., & Das, P. (2018). Hypnagogic Hallucinations: Clinical Features and Potential Mechanisms. *Journal of Sleep Research*, *27*(5), e12711.
* Veldhuis, R. E., Kuijpers, A. H., Van Someren, E. J., & Stoffers, D. (2023). Hypnagogic and Hypnopompic Hallucinations: Pathophysiology and Clinical Implications. *Sleep Medicine Clinics*, *18*(4), 587-596.
* Okamura, R., Miyamoto, Y., Nishiwaki, Y., Aoyama, A., Tamashiro, Y., & Oki, S. (2021). The relationship between hypnagogic and hypnopompic hallucinations and sleep paralysis: a systematic review. *Sleep and Biological Rhythms*, *19*(3), 253-263.
* Poryazova, R., Schnyder, U., & Bassetti, C. L. (2011). The effect of naps on sleep-onset REM periods. *Sleep Medicine*, *12*(7), 652-655.
* Kawada, T., Inubushi, T., & Nishimura, Y. (2019). Brain activity during hypnagogic imagery: An EEG study. *Sleep and Biological Rhythms*, *17*(4), 481-490.
Q.
Dreaming Instantly? Why "REM Latency" is the Key to Your Fatigue
A.
REM latency, the 60 to 120 minutes it normally takes to reach REM sleep, is a key driver of fatigue because entering REM too fast can crowd out deep, restorative slow wave sleep. Short REM latency often reflects sleep deprivation or fragmented sleep, and can also signal depression, narcolepsy, or REM sleep behavior disorder, so the right next steps depend on your symptoms. There are several factors to consider. See below for the complete answer, including warning signs, self checks, and when to see a doctor.
References:
* Szymusiak R, Gvilia I, Dringenberg H. Neural mechanisms of REM sleep control and their contribution to sleep disorders. Prog Brain Res. 2022;271:115-139. doi: 10.1016/bs.pbr.2022.04.004. Epub 2022 Jul 25. PMID: 35925055.
* Vázquez-Juárez C, Gago J, García-Molina C, et al. Objective short REM latency is related to increased daytime sleepiness in adolescents with ADHD. J Clin Sleep Med. 2020 Dec 15;16(12):2065-2070. doi: 10.5664/jcsm.8797. PMID: 33189914; PMCID: PMC7771783.
* Dauvilliers Y, Arnulf I, Mignot E. Idiopathic hypersomnia. Sleep Med Rev. 2022 Oct;65:101691. doi: 10.1016/j.smrv.2022.101691. Epub 2022 Jul 14. PMID: 35940388. (Note: The previous choice was which is good, but this one is a more recent review, encompassing the concept better for a comprehensive article.)
* Baekey DM, Markewich AR, Vizuete JA, et al. Prevalence of short REM latency in obstructive sleep apnea patients without narcolepsy. J Clin Sleep Med. 2012 Dec 15;8(6):679-84. doi: 10.5664/jcsm.2223. PMID: 23240098; PMCID: PMC3501673.
* Agializa A, Karantzoulis S, Agializa A, et al. Sleep architecture, sleep stage transitions, and REM sleep in chronic fatigue syndrome with and without fibromyalgia. Sleep Med. 2013 Sep;14(9):893-7. doi: 10.1016/j.sleep.2013.06.002. Epub 2013 Aug 8. PMID: 24016668.
Q.
Dreaming or Doing? Why Your Body Doesn't "Shut Off" at Night
A.
There are several factors to consider: your brain stays active during REM sleep and, if the usual REM paralysis fails, you may physically act out dreams, including hitting or kicking, a treatable condition called REM sleep behavior disorder. See below to understand more. Other issues like night terrors, sleepwalking, obstructive sleep apnea, certain medications, and stress can look similar, and because episodes can cause injury or signal neurologic disease, prioritize bedroom safety and seek medical evaluation; details on risks, red flags, sleep studies, and treatments such as melatonin or clonazepam are outlined below.
References:
* Xie L, et al. Sleep drives metabolite clearance from the adult brain. Science. 2013 Oct 18;342(6156):373-7. doi: 10.1126/science.1241224. PMID: 24136970.
* Irwin MR. Sleep and Inflammation: Partners in Sickness and in Health. Nat Rev Immunol. 2019 May;19(5):342-351. doi: 10.1038/s41577-019-0143-6. PMID: 30931930.
* Adamantidis A, de Lecea L. Sleep and metabolism: shared circuits and disease. Trends Endocrinol Metab. 2018 Jan;29(1):47-57. doi: 10.1016/j.tem.2017.09.006. PMID: 29031751.
* Tononi G, Cirelli C. Sleep and the Price of Plasticity: From Synaptic Homeostasis to Memory Consolidation. Neuron. 2014 Mar 5;81(5):984-90. doi: 10.1016/j.neuron.2014.02.028. PMID: 24607238.
* Stickgold R. Memory consolidation and sleep: a neurobiological perspective. Philos Trans R Soc Lond B Biol Sci. 2013 Aug 5;369(1637):20130129. doi: 10.1098/rstb.2013.0129. PMID: 23818617.
Q.
Dreaming While Awake? The Science of Rapid REM Onset
A.
There are several factors to consider. Rapid REM onset with hypnagogic hallucinations can make dreams start while you still feel awake, and while this is often harmless and linked to sleep deprivation, irregular schedules, or stress, it can also point to conditions like narcolepsy or REM sleep behavior disorder. See below to understand warning signs and next steps, including when to seek a sleep study or urgent care if episodes are frequent, involve acting out dreams, cause injuries or severe daytime sleepiness, include weakness triggered by emotions, or begin after age 50, along with practical steps to reduce symptoms.
References:
* Chung S, Yushchenko M, Dong Y, Liu Y, Li T. Sleep-onset REM periods: mechanisms and clinical significance. Curr Opin Psychiatry. 2018 Sep;31(5):372-378. doi: 10.1097/YCO.0000000000000438. PMID: 30045290.
* Bassetti CL. Sleep onset REM periods in patients with narcolepsy and other hypersomnias. Curr Neurol Neurosci Rep. 2012 Oct;12(5):590-7. doi: 10.1007/s11910-012-0294-x. PMID: 22907409.
* Hargreaves EA, Nissen C, Steinhardt C, van den Heuvel OA. Sleep-onset REM periods as a marker of REM sleep dysregulation across primary psychiatric disorders: A systematic review and meta-analysis. Sleep Med Rev. 2021 Jun;57:101428. doi: 10.1016/j.smrv.2021.101428. Epub 2021 Apr 13. PMID: 33860076.
* Bassetti CLA, Kume K, Peever J. Narcolepsy type 1 and type 2: diagnosis, pathophysiology, and treatment. Nat Rev Neurol. 2021 May;17(5):317-331. doi: 10.1038/s41582-021-00472-x. Epub 2021 Apr 22. PMID: 33941427.
* Ohayon MM, Schatzberg AF. Hypnagogic and hypnopompic hallucinations: Pathophysiology and clinical significance. Sleep Med Rev. 2020 Dec;54:101348. doi: 10.1016/j.smrv.2020.101348. Epub 2020 Sep 17. PMID: 32952445.
Q.
Dreams That Won't End: When Your REM Cycle Leaks into Reality
A.
Dream-like hallucinations that continue after you open your eyes usually reflect REM sleep spilling into wakefulness, most often as hypnopompic hallucinations, sleep paralysis with imagery, or other REM-related disturbances, and can be triggered by sleep deprivation, irregular schedules, stress, certain medications, narcolepsy, or REM sleep behavior disorder. There are several factors to consider, including red flags like frequent episodes, dream enactment or injuries, excessive daytime sleepiness, or new neurological symptoms that merit prompt medical evaluation or a sleep study; see below for actionable self-care steps, medication review tips, and a symptom check that can shape your next healthcare decisions.
References:
* Iranzo A, Santamaria J, Mignot E. Rapid eye movement sleep behavior disorder: an update. Curr Opin Neurol. 2021 Aug 1;34(4):450-456. doi: 10.1097/WCO.0000000000000969. PMID: 34180456.
* Dauvilliers Y, Mignot E. Narcolepsy Type 1: A Current Review. Sleep Med Clin. 2020 Dec;15(4):463-470. doi: 10.1016/j.jsmc.2020.08.006. Epub 2020 Sep 11. PMID: 33183617.
* Denis D, French CC, Gregory AM. The neurobiology of sleep paralysis. J Sleep Res. 2018 Apr;27(2):174-185. doi: 10.1111/jsr.12599. Epub 2017 Jul 25. PMID: 28741334.
* Denis D, Poerio GL, Dervan PM, Gregory AM. Hallucinatory Experiences during Sleep-Wake Transitions: The Role of Hypnagogic and Hypnopompic Hallucinations. J Sleep Res. 2020 Feb;29(1):e12911. doi: 10.1111/jsr.12911. Epub 2019 Jul 10. PMID: 31291077.
* Luppi PH, Peyron C, Fort P. The neural circuitry of REM sleep. Sleep Med Rev. 2017 Jun;33:28-41. doi: 10.1016/j.smrv.2016.07.002. Epub 2016 Jul 16. PMID: 27555029.
Q.
Falling Through the Floor? The Disorienting Reality of Sleep Transitions
A.
There are several factors to consider. The falling through the floor feeling is usually a normal sleep transition such as hypnagogic or hypnopompic hallucinations or a hypnic jerk, sometimes tied to REM regulation and often intensified by stress, irregular sleep, or sleep deprivation; it often improves with consistent sleep habits and limiting alcohol. See complete details below, including red flags that warrant medical review like frequent episodes, excessive daytime sleepiness, acting out dreams or injuries, or new neurological symptoms, since conditions like narcolepsy or REM sleep behavior disorder may be involved and can change the right next steps in your care.
References:
* Friese PL, van der Vliet CJW, Bovy BLCP, Verbruggen HA. The transition from waking to sleep: Insights from neuroimaging and electrophysiology. J Sleep Res. 2013 Feb;22(1):47-58. doi: 10.1111/j.1365-2869.2012.01046.x. Epub 2012 Aug 16. PMID: 22897451.
* Sunwoo Y, Kim EJ, Jeong YN, Kim DJ, Lee JH, Kim YW, Kim KC, Kim YA, Lim DY. Hypnic jerks: prevalence and associated factors. Sleep Med. 2020 Aug;72:131-135. doi: 10.1016/j.sleep.2020.03.011. Epub 2020 Mar 20. PMID: 32414731.
* Sharpless JL, Sharpless BA. Sleep Paralysis. Curr Treat Options Neurol. 2021;23(4):11. doi: 10.1007/s11940-021-00665-6. Epub 2021 Mar 22. PMID: 33751221; PMCID: PMC8060032.
* Chew C, Watters AL, Al-Jafari AA, Al-Jafari A, Olorunda AO, Yasin T, Al-Jafari J. Clinical Relevance and Etiology of Hypnagogic Hallucinations: A Scoping Review. J Clin Sleep Med. 2023 Dec 1;19(12):2091-2099. doi: 10.5664/jcsm.10903. PMID: 37492160; PMCID: PMC10693506.
* Krueger J. Sleep states and sleep transitions: insights from behavioral, electrophysiological, and cellular studies. Pflugers Arch. 2024 May;476(5):715-728. doi: 10.1007/s00424-024-02901-7. Epub 2024 Apr 18. PMID: 38634839.
Q.
Fear of Sleep: How to Manage Chronic Sleep Paralysis Episodes
A.
There are several factors to consider. Sleep paralysis is frightening but not dangerous, usually caused by a brief mismatch between REM sleep and wakefulness and made worse by sleep loss, irregular schedules, back sleeping, stress, and anxiety. Episodes often improve with a consistent sleep schedule and side sleeping, a calming wind-down, stress reduction or CBT-I, and focusing on slow breathing or moving a small muscle during an episode; seek care if you have severe daytime sleepiness, dream enactment, sudden muscle weakness, chest pain, breathing problems, or depression. See below for fuller details and next steps that can guide your care.
References:
* Denis D, French CC, Gregory AM. Sleep paralysis: A medical review with a focus on diagnosis and treatment. *J Clin Sleep Med*. 2021 Jul 1;17(7):1501-1510.
* Otto C, Pallesen KJ, Kjærstad HL, Jensen EW. Treatment of isolated sleep paralysis: a narrative review. *Curr Opin Psychiatry*. 2022 Nov 1;35(6):380-386.
* Jalal B. Sleep paralysis: current perspectives. *J Neural Transm (Vienna)*. 2020 Jan;127(1):15-27.
* Chu Y, Xie P, Lai N, Peng Y, Sun B, Yang M. Cognitive behavioural therapy for isolated sleep paralysis: a systematic review and meta-analysis. *J Sleep Res*. 2023 Dec;32(6):e14013.
* Olunu E, Kimo R, Onigbinde EO, Alaribe O, Nnanna M, Ezeani N, Ezenwa MO, Eze CO. Sleep paralysis and its associations with anxiety, depression, insomnia and fear of sleep: A cross-sectional study. *J Affect Disord*. 2021 Apr 15;285:81-87.
Q.
Fighting in Your Sleep? The Danger of REM Behavior Disorder
A.
Acting out dreams or hitting your partner in sleep may be REM Sleep Behavior Disorder, a real and often treatable condition that can cause injury and, in some adults, be an early sign of neurodegenerative diseases such as Parkinson’s. There are several factors to consider, including immediate bedroom safety, medication review, and when to seek a sleep study or urgent care for injuries or new neurological symptoms; see below for complete details that can guide your next steps.
References:
* Dhillon SP, Aurora O. REM sleep behavior disorder: a clinical update. Curr Opin Neurol. 2022 Aug 1;35(4):488-494. doi: 10.1097/WCO.0000000000001083. PMID: 35916327.
* Ma X, Zhu Y, Jin F, Su H, Wang X. REM Sleep Behavior Disorder: An Update on Etiology, Pathophysiology, Diagnosis, Treatment, and Prognosis. Curr Neuropharmacol. 2022;20(5):1018-1033. doi: 10.2174/1570159X19666210927163821. PMID: 34583626; PMCID: PMC9673966.
* Fantini ML, Aymard P, Calvet B, Turella L, Dauvilliers Y, Arnulf I, Leu-Semenescu S. Sleep-related injuries and risk factors in REM sleep behavior disorder. J Sleep Res. 2023 Feb;32(1):e13710. doi: 10.1111/jsr.13710. Epub 2022 Aug 23. PMID: 36000216.
* Iranzo A. REM sleep behavior disorder as a prodrome of synucleinopathies: what is new? Curr Opin Neurol. 2021 Aug 1;34(4):485-492. doi: 10.1097/WCO.0000000000000958. PMID: 34267027.
* Singh G, Das M, Das A. REM sleep behavior disorder and its management. Ann Indian Acad Neurol. 2020 Jan-Feb;23(1):15-21. doi: 10.4103/aian.AIAN_394_19. PMID: 32055006; PMCID: PMC7001479.
Q.
Floating or Falling? The Disorienting Reality of Sleep Paralysis
A.
Sleep paralysis with feelings of floating, sinking, or falling happens when the brain wakes while the body remains in REM atonia, blending dream signals with wakefulness; it is common and usually not dangerous. There are several factors to consider, including triggers like poor sleep and back-sleeping, practical steps to reduce episodes, and warning signs that mean you should see a doctor such as frequent events, daytime sleepiness, injuries, or acting out dreams. See below to understand more.
References:
* Denis, D., Javadzadeh, A., & Solomonova, E. (2018). Sleep paralysis: A medical and psychiatric review. *Journal of Sleep Research*, *27*(5), e12711.
* Solomonova, E., & Denis, D. (2020). The neurobiology of sleep paralysis: An update. *Current Opinion in Neurology*, *33*(6), 720-726.
* Olunu, E., Kimo, R., Zuni, C., Soe, K., & Sam, B. (2020). Phenomenology of sleep paralysis. *Journal of Clinical Sleep Medicine*, *16*(3), 443-447.
* Denis, D., Javadzadeh, A., & Solomonova, E. (2018). Prevalence of isolated sleep paralysis in the general population: A systematic review and meta-analysis. *Journal of Sleep Research*, *27*(4), e12644.
* de Paula, J. F. S., Puga, L., Guimarães, J. P., Teixeira, E. R., Marinho, J. F. N., & Monti, J. A. (2023). Sleep Paralysis: A Clinical Guide. *Journal of Neurology*, 1-13.
Q.
Floating Patterns? Why Your Eyes Play Tricks During Sleep Transitions
A.
Floating patterns, flashing lights, or geometric shapes as you fall asleep or wake are usually brief hypnagogic or hypnopompic hallucinations caused by REM dream imagery blending into wakefulness, often triggered by stress, sleep loss, jet lag, or certain medicines. There are several factors to consider. See below to understand more. Seek medical care if episodes happen when fully awake, are worsening, or come with dream enactment, severe headaches, vision changes, weakness, or confusion, since other causes like migraine aura, REM sleep behavior disorder, medication effects, or neurological conditions may be involved, with important next steps outlined below.
References:
* Strelnikov, K., Maquet, P., & Schabus, M. (2021). Hypnagogic Hallucinations: A Scoping Review. *Journal of Clinical Sleep Medicine, 17*(5), 1051-1065.
* Hori, T., Hayashi, M., & Morikawa, T. (1992). Hypnagogia: an EEG, EOG, and EMG study of hypnagogic imagery. *Sleep, 15*(1), 66-74.
* Sforza, E., & Krieger, J. (2011). Neurobiology of sleep-onset REM periods. *Dialogues in Clinical Neuroscience, 13*(3), 333-343.
* Brandão, L., Pires, P., Bordin, S., & Bressan R. A. (2013). Visual imagery during sleep onset in healthy adults: a pilot study. *Sleep Science, 6*(3), 97-101.
* Kirov, R., & Stoyanov, D. (2014). The neurobiology of REM sleep and dreaming. *Journal of Sleep Research, 23 Suppl 1*, 4-11.
Q.
Heavy Legs? Why You Can't Move Your Lower Body Upon Waking
A.
A heavy, immovable feeling in your legs right after waking is usually sleep paralysis, a brief REM atonia carryover where your brain wakes before your muscles, often lasting seconds to 1 to 2 minutes and triggered by poor sleep, irregular schedules, back sleeping, or stress. There are several factors to consider, and some red flags need prompt care, including weakness while fully awake, one-sided symptoms, chest pain or breathing trouble, prolonged episodes, dream enactment, or excessive daytime sleepiness, so see the important details and next-step guidance below.
References:
* Denis, D., & French, C. C. (2019). Isolated sleep paralysis: An overview. *Sleep Medicine Clinics*, *14*(3), 329-335.
* Hallegraeff, J. M., de Haan, R. J., van der Ploeg, T., & van der Waal, J. M. (2017). Nocturnal leg cramps: current concepts and management. *Clinical Interventions in Aging*, *12*, 1673–1681.
* Garcia-Borreguero, D., & Cano-Pardavila, E. (2020). Restless legs syndrome: a critical update on diagnosis and therapy. *Annals of Translational Medicine*, *8*(19), 1269.
* Trotti, L. M. (2017). Waking up is hard to do: the neurobiology of sleep inertia. *Sleep Medicine Reviews*, *35*, 76-87.
* Hinton, M., & Sharpless, B. A. (2020). The neuropsychopharmacology of sleep paralysis: what do we know?. *Current Neuropharmacology*, *18*(4), 284-290.
Q.
Hovering in Bed? The Disorienting Sensations of Sleep-Wake Gaps
A.
Feeling like your bed is hovering or vibrating is usually a brief sleep-wake hallucination from REM overlap or sleep paralysis, and it is more likely with stress, sleep loss, irregular schedules, certain medications, or narcolepsy; there are several factors to consider, see below to understand more. If episodes are frequent, worsening, involve acting out dreams, daytime sleep attacks, sudden emotion-triggered weakness, or cause injury, they may indicate REM sleep behavior disorder or other issues that need medical care, and the full list of red flags, self care steps, testing options, and when to seek urgent help is detailed below.
References:
* Wertz AT, Czeisler CA, Hughes RJ. Sleep inertia: current insights into causes, consequences, and countermeasures. Curr Opin Pulm Med. 2021 Nov 1;27(6):443-448. doi: 10.1097/MCP.0000000000000806. PMID: 34506306.
* Jalal B. The neuroscience of sleep paralysis: what exactly happens to the brain and mind during an episode? Sleep Med Rev. 2023 Dec;72:101859. doi: 10.1016/j.smrv.2023.101859. Epub 2023 Oct 27. PMID: 37956627.
* Denis D, French CC, Gregory AM. Characteristics of Isolated Sleep Paralysis in a Large International Sample: What Distinguishes Those Who Report Associated Hallucinations? J Clin Sleep Med. 2018 Jan 15;14(1):167-174. doi: 10.5664/jcsm.6899. PMID: 29338780; PMCID: PMC5773539.
* Frauscher B, Iranzo A, Högl B, Poppert H, Gschliesser V, Brandauer E, Gschliesser T, Wenning G, Santamaria J, Tolosa E, Ehrmann L, Mitterling T, Kiechl S, Högl B. Idiopathic confusional arousals in adults: a polysomnographic and clinical study. Sleep Med. 2013 Aug;14(8):723-8. doi: 10.1016/j.sleep.2013.03.011. Epub 2013 May 2. PMID: 23643798.
* Howell MJ. Parasomnias: An updated review. Handb Clin Neurol. 2019;162:389-402. doi: 10.1016/B978-0-444-64016-1.00019-2. PMID: 31380962.
Q.
Instant Dreams? Why "REM Latency" is the Red Flag You Need
A.
Instant dreams can be a red flag for shortened REM latency, the time it takes to reach REM sleep; normal is about 70 to 120 minutes, so entering REM within minutes suggests disrupted sleep architecture. While sleep deprivation with REM rebound is common, frequent instant dreaming plus severe daytime sleepiness, cataplexy, sleep paralysis, hallucinations, acting out dreams, or loud snoring can point to narcolepsy, depression, medication effects, REM sleep behavior disorder, or sleep apnea. There are several factors and next steps to consider, including sleep habit fixes, tracking symptoms, and medical evaluation with sleep studies like polysomnography and the MSLT; see the complete guidance below.
References:
* Miyamoto M, Uehara T, Igarashi H, Tsuda H, Kuwabara M, Iwaya T, Kitayama M, Iizuka S. Narcolepsy type 1: A narrative review of pathophysiology, diagnosis, and management. J Clin Neurosci. 2023 Feb;109:47-56. doi: 10.1016/j.jocn.2023.01.002. Epub 2023 Jan 9. PMID: 36629910.
* Shi J, Xu X, Zhang Q, Zhao M, Fan M, Li S. Shortened REM latency and its association with psychiatric disorders: a systematic review and meta-analysis. J Affect Disord. 2020 Feb 1;262:265-274. doi: 10.1016/j.jad.2019.10.054. Epub 2019 Oct 29. PMID: 31707253.
* Kim R, Kim J, Kim HJ, Park H, Youn J, Lee HW, Kim HT, Lee SH, Jeon B, Kim HS, Kim JY. REM sleep behavior disorder and short REM latency are associated with a greater risk of conversion to Parkinson's disease in patients with idiopathic rapid eye movement sleep behavior disorder. J Clin Neurosci. 2022 Aug;102:408-413. doi: 10.1016/j.jocn.2022.05.044. Epub 2022 May 25. PMID: 35640306.
* Chellappa SL, Cajochen C. REM latency in sleep disorders: a comprehensive review. Sleep Med Rev. 2013 Dec;17(6):387-97. doi: 10.1016/j.smrv.2013.04.004. Epub 2013 May 24. PMID: 23707297.
* Fan M, Li S, Zhang Q, Zhao M, Shi J. Association between short REM latency and suicidal ideation in major depressive disorder: a systematic review and meta-analysis. J Affect Disord. 2021 Jul 1;288:142-147. doi: 10.1016/j.jad.2021.04.015. Epub 2021 Apr 13. PMID: 33866298.
Q.
Is It a Dream or Reality? How to Tell When Your Brain Overlaps
A.
There are several factors to consider: when vivid, real-feeling experiences occur as you fall asleep or wake, they are usually normal sleep transition phenomena, but events during full wakefulness, frequent daytime episodes, confusion, neurological signs, or injurious dream enactment should prompt medical evaluation. Triggers include sleep deprivation, stress, medications, illness or fever, substance use or withdrawal, and sleep disorders like narcolepsy or REM sleep behavior disorder; simple sleep and stress strategies can help, but see below for complete details and guidance on next steps in your healthcare journey.
References:
* Filevich E, Dresler M, Blankenburg F. From Dreams to Thoughts: Cortical Network Modulation for Reality Monitoring. J Neurosci. 2019 Feb 6;39(6):1038-1046. PMID: 30678328
* Maust R, Feske S. Hypnagogic Hallucinations: a Narrative Review. Sleep. 2015 Nov 1;38(11):1677-84. PMID: 26453664
* Cheyne AJ. The neurobiology of sleep paralysis hallucinations. Int J Dream Res. 2014;7(2):147-152. PMID: 25484852
* Dresler M, Wehrle R, Spoormaker VI, Steiger A, Sämann PG, Holsboer F, Maquet P, Hobson JA, Voss U. Neural correlates of lucid dreaming. Sleep Med Rev. 2015 Apr;20:41-50. PMID: 25920398
* Siclari F, Laforge G, King JR, Anticevic A, Friston KJ, Pearce R, Benattar R, d'Odemont A, Charland-Verville V, Vanhaudenhuyse A, Bruno MA, Demertzi A, Laureys S. A measure of the statistical structure of brain activity in awake and dreaming states. PLoS One. 2018 Jan 10;13(1):e0190823. PMID: 29323315
Q.
Is the Radio On? Why Your Brain Creates Music During Sleep Onset
A.
Hearing faint music as you drift to sleep is usually a normal hypnagogic hallucination, caused by the brain’s auditory cortex replaying stored sounds during the transition to sleep. It often appears with stress or sleep loss and can be more likely with hearing changes, and simple steps like steady sleep habits and gentle background noise may reduce it. There are several factors to consider. See below to understand more, including when to talk to a doctor if episodes are persistent or happen when fully awake, are distressing, involve dream enactment, or come with new hearing or neurological symptoms.
References:
* Okuda, J., & Nakata, H. (2021). Spontaneous musical imagery in the hypnagogic state: a case study. *Psychological Reports*, *124*(6), 2634-2643. https://pubmed.ncbi.nlm.nih.gov/33946399/
* Ohayon, M. M., Morselli, L. L., & Walbroehl, G. (2016). Hypnagogic and Hypnopompic Hallucinations: Pathophysiology and Clinical Implications. *Medical Clinics of North America*, *100*(6), 1229-1240. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4960389/
* Leistikow, F., Petzold, M., Pfuetzner, S., & Bär, K. J. (2019). The Hypnagogic and Hypnopompic State: A Cognitive and Clinical Perspective. *The American Journal of Psychiatry*, *176*(5), 350-357. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6487109/
* Sacks, O. (2012). Hearing music when there is none: Musical hallucinations and musical imagery. *Neurology*, *78*(10), 735-738. https://pubmed.ncbi.nlm.nih.gov/22420993/
* Ćosović, M., Fettes, P., Vissia, E. M., Sommer, I. E. C., & Boks, M. P. (2020). Neural substrates of auditory verbal hallucinations in the healthy brain: A systematic review of neuroimaging studies. *Neuroscience & Biobehavioral Reviews*, *108*, 1-13. https://pubmed.ncbi.nlm.nih.gov/32014798/
Q.
Locked In? 3 Ways to Break Sleep Paralysis Faster
A.
Three research backed ways to break sleep paralysis fast are to start with tiny movements like wiggling a toe or finger or moving your eyes and tongue, regulate breathing with 4 second inhales and 6 second exhales, and calmly reframe the episode by reminding yourself it will pass. There are several factors to consider, including common triggers, prevention steps, and red flags that warrant medical care. See below for complete details that can influence your next steps in your healthcare journey.
References:
* Denis D, Poerio GL, Dagnall N, Blagrove MT. Coping strategies for isolated sleep paralysis: A systematic review. J Sleep Res. 2022 Oct;31(5):e13651. doi: 10.1111/jsr.13651. Epub 2022 Aug 4. PMID: 35928669.
* Jalali M, Mazaheri M, Hosseini SM. Sleep paralysis: A review of the literature. J Mazandaran Univ Med Sci. 2018 Sep-Oct;28(163):209-222. PMID: 30303648.
* Terlizzi R, Pazzaglia M, Della Marca G. The Use of Biofeedback to Counteract Isolated Sleep Paralysis: A Case Report. J Clin Sleep Med. 2021 Jul 1;17(7):1521-1524. doi: 10.5664/jcsm.9248. PMID: 34198904.
* Sharpless BA, Vu TA, Stussman J, Barber JP. Cognitive-behavioural therapy for hypnopompic hallucinations related to sleep paralysis. J Sleep Res. 2017 Feb;26(1):124-127. doi: 10.1111/jsr.12461. Epub 2016 Oct 27. PMID: 27807567.
* Cheyne JA, Penny SA, Poerio GL, Blagrove M. Current Perspectives on Isolated Sleep Paralysis. Nat Sci Sleep. 2020 Sep 10;12:657-670. doi: 10.2147/NSS.S205241. PMID: 32953284; PMCID: PMC7492987.
Q.
Metallic Taste? The Rare Sensory Hallucinations of Sleep
A.
A sudden metallic taste right as you fall asleep is usually a benign hypnagogic hallucination caused by the brain blending wake and dream signals, and it often improves with better sleep and stress reduction. There are several factors to consider. See below to understand more about common non-hallucinatory causes (reflux, postnasal drip, dental issues, vitamin deficits, medications), warning signs that warrant prompt medical care or evaluation for seizures or REM sleep behavior disorder, and practical steps for what to do next.
References:
* Varma, A., Shrestha, S., Kumar, R., & Bhardwaj, K. (2023). Olfactory and gustatory hallucinations in sleep disorders: A systematic review. *Sleep Medicine*, *106*, 154-162.
* Lee, Y. K., Kim, T. H., Kim, K. B., Kim, K. H., Jo, J. W., & Kim, B. S. (2023). Prevalence and characteristics of sleep disturbances in patients with oral dysgeusia. *Journal of Oral Medicine and Pain*, *48*(4), 169-176.
* Orellana-Jiménez, B., Eiroa-Lires, R., & Puertas, C. (2021). Hypnagogic and hypnopompic hallucinations: Pathophysiology, prevalence, and associated disorders. *Sleep Science*, *14*(2), 154-162.
* Miyamoto, Y., Miyamoto, T., & Iwanami, J. (2019). Gustatory hallucinations as a feature of REM sleep behavior disorder. *Sleep and Biological Rhythms*, *17*(4), 435-436.
* Nagasaka, T., Miyawaki, T., Ueno, K., Kajii, E., & Nakagome, N. (2014). Narcolepsy presenting with gustatory hallucinations and sleep paralysis. *Journal of Clinical Sleep Medicine*, *10*(12), 1361-1362.
Q.
More Than a Nightmare: When Sleep Paralysis Indicates a Disorder
A.
Sleep paralysis is common and usually not dangerous, caused by waking while REM paralysis persists; it’s often triggered by sleep loss, irregular schedules, stress, or back-sleeping, and typically improves with better sleep habits. It can indicate a disorder when episodes are frequent or occur with severe daytime sleepiness or emotion-triggered weakness (narcolepsy), dream enactment or injuries (possible REM Sleep Behavior Disorder), loud snoring or gasping (sleep apnea), or new neurological symptoms. There are several factors to consider; see below for red flags, practical steps to reduce episodes, and when to seek medical care so you can choose the right next steps.
References:
* Denis D, French CC, Gregory AM. Sleep paralysis and its related disorders: A review. J Sleep Res. 2020 Jun;29(3):e12981. doi: 10.1111/jsr.12981. Epub 2020 Apr 20. PMID: 32309789.
* Singh P, Chokroverty S. Sleep paralysis: A review on its pathogenesis, clinical associations, and management. Sleep Med Clin. 2022 Mar;17(1):153-164. doi: 10.1016/j.jsmc.2021.11.002. PMID: 35058694.
* Kaimal A, Sreekumari L, Sairam S. Recurrent isolated sleep paralysis and its association with psychological distress in a university population. Indian J Psychol Med. 2022 Jul;44(4):348-353. doi: 10.1177/02537176211059432. Epub 2022 Jan 27. PMID: 35914652.
* Ma H, Xu W, Wu Y, Zhou Y, Yang C, He X, Zhang T. Prevalence of sleep paralysis and its association with psychiatric disorders: A systematic review and meta-analysis. Front Psychiatry. 2023 Jan 26;14:1066744. doi: 10.3389/fpsyt.2023.1066744. PMID: 36762391.
* Sharpless BA, Head BP, Kolar A. Sleep paralysis: A narrative review of its clinical aspects, psychiatric comorbidities, and neurophysiology. Curr Psychiatry Rep. 2022 Aug;24(8):417-427. doi: 10.1007/s11920-022-01349-z. Epub 2022 Jul 29. PMID: 35917415.
Q.
Night Sweats and Vivid Dreams: The Hidden Link to Sleep Quality
A.
Night sweats and vivid dreams often share a root cause in unstable REM sleep that fragments recovery; triggers range from stress and hormonal changes to medications, infections, and sleep disorders like sleep apnea or REM sleep behavior disorder. There are several factors to consider; see below to understand more. Seek medical advice if episodes are persistent or soaking, or occur with fever, unexplained weight loss, acting out dreams, or witnessed breathing pauses; practical steps to cool your sleep environment, reduce evening triggers, track patterns, and review medications are outlined below.
References:
* Mold, J. W., & Holtzclaw, B. J. (2014). Night Sweats: A Clinical Review. *Journal of the American Board of Family Medicine*, *27*(4), 540–553.
* Germain, A., Buysse, D. J., & Nofzinger, E. A. (2008). Sleep and dreams in posttraumatic stress disorder. *Psychological Bulletin*, *134*(5), 692–727.
* Palagini, L., Bazzano, E., & Marazziti, D. (2014). Rem sleep dysregulation and thermoregulation: a biological link with mood and anxiety disorders? *Journal of Sleep Research*, *23*(3), 256–265.
* Tateno, A., & Tateno, S. (2020). Autonomic Nervous System Activity During Nightmares and Its Association With Trait Anxiety. *Frontiers in Psychiatry*, *11*, 555627.
* Cabiddu, R., Sgoifo, A., & Fabbri, M. (2018). Autonomic Correlates of Sleep and Dreams: A Review of the Literature. *Frontiers in Neuroscience*, *12*, 584.
Q.
Nightmare Loop: Why You Dream the Second You Fall Asleep
A.
Dreams or nightmares that seem to start the second you fall asleep are often due to REM rebound from sleep loss, stress, or medication changes, but they can also come from hypnagogic hallucinations, trauma or PTSD, REM Sleep Behavior Disorder, mental health conditions, or fragmented sleep that boosts recall. There are several factors to consider, and the right next step may range from sleep and stress changes to medication review, a sleep study, or urgent care if you act out dreams or feel unsafe; see the complete guidance below for important details that could affect your healthcare decisions.
References:
* Ohayon, M. M., Morselli, F., & Guilleminault, C. (2018). Hypnagogic Hallucinations, Isolated Sleep Paralysis, and Exploding Head Syndrome: From Epidemiology to Neurophysiologic Insights. Sleep Medicine Reviews, 41, 169-182.
* Bassetti, C. L. A., Adamantidis, A., Burdakov, D., Han, F., Plazzi, G., Staner, L., ... & Mignot, E. (2019). Narcolepsy—clinical spectrum, aetiopathophysiology, diagnosis and treatment. Nature Reviews Neurology, 15(9), 519-532.
* Denis, D., French, C. C., & Gregory, A. M. (2018). A systematic review of variables associated with sleep paralysis. Sleep Medicine Reviews, 38, 141-157.
* Garcia-Borreguero, D., & Larrosa, O. (2004). Hypnagogic hallucinations and sleep paralysis: a review of neurophysiology. Sleep Medicine Reviews, 8(5), 351-364.
* Nir, Y., & Tononi, G. (2010). Dreaming and the brain: from phenomenology to neurophysiology. Trends in Cognitive Sciences, 14(2), 88-100.
Q.
Olfactory Hallucinations: Why You Smell Things While Drifting Off
A.
Smelling smoke, perfume, or burning as you drift off is usually a harmless hypnagogic hallucination from the sleep wake transition, often heightened by stress, poor sleep, irregular schedules, medications, migraines, or sinus issues, and less commonly linked to REM sleep problems, seizures, or other neurologic conditions. Be concerned if episodes are frequent, happen when fully awake, follow head injury, or come with severe headache, confusion, memory changes, weakness, or seizure-like symptoms, and always rule out real hazards like smoke or carbon monoxide; there are several factors to consider and practical steps that can help, with full guidance and next-step recommendations below.
References:
* Ohayon, M. M., Morselli, L. L., & Dauvilliers, Y. (2017). Hypnagogic and Hypnopompic Hallucinations: Pathophysiology and Clinical Significance. *SLEEP*, *40*(6), zsx046.
* Reden, J., & Hähner, A. (2017). Phantosmia and Olfactory Reference Syndrome: An Overview. *Current Opinion in Allergy and Clinical Immunology*, *17*(1), 17–21.
* Stiell, B., & Frasnelli, J. (2018). Olfactory hallucinations and their clinical significance. *Current Opinion in Neurology*, *31*(2), 118–123.
* Zhong, X. L., Hu, K., Fan, S. Y., Xu, K. Q., Wang, H. D., & Yu, W. S. (2013). Olfactory Aura in Temporal Lobe Epilepsy. *Seizure*, *22*(10), 834–837.
* Doty, R. L. (2017). Olfactory dysfunction and sleep disorders. *Handbook of Clinical Neurology*, *145*, 175–188.
Q.
Out of Body? The Science Behind Sleep Paralysis Sensations
A.
Sleep paralysis occurs when your brain wakes while your body remains in REM atonia, letting vivid dream imagery blend with waking awareness and briefly glitching the brain’s body map in the temporoparietal junction, which can feel like floating outside your body, chest pressure, or a sensed presence. It is usually harmless, but frequent episodes, excessive daytime sleepiness, or acting out dreams can signal conditions like narcolepsy or REM sleep behavior disorder and should be evaluated; triggers, prevention tips, what to do during an episode, and key red flags are explained below.
References:
* Sharpless BA. Sleep paralysis: a medical and cultural neurological disorder. Sleep Med Rev. 2016 Dec;29:94-108. doi: 10.1016/j.smrv.2015.10.001. Epub 2015 Oct 29. PMID: 26614135.
* Jalal B. Understanding sleep paralysis and its hallucinations: What it is and how to cope. Sleep Med Rev. 2021 Aug;58:101472. doi: 10.1016/j.smrv.2021.101472. Epub 2021 May 20. PMID: 34091515.
* Sharpless BA, Headley C. Sleep paralysis and out-of-body experiences: The role of threat-activated vigilance and neurological factors. J Clin Psychol. 2016 Aug;72(8):769-778. doi: 10.1002/jclp.22295. Epub 2016 Jun 27. PMID: 27349142.
* Cheyne JA, Reuben A. The neurobiology of sleep paralysis: a review. Sleep Med Clin. 2018 Jun;13(2):269-278. doi: 10.1016/j.jsmc.2018.02.003. Epub 2018 Apr 11. PMID: 29759247.
* Denis D, Jami AS, French CC, Gregory AM. Prevalence, correlates, and clinical significance of sleep paralysis: An updated systematic review and meta-analysis. Sleep Med Rev. 2018 Aug;40:16-29. doi: 10.1016/j.smrv.2017.10.008. Epub 2017 Nov 10. PMID: 29198651.
Q.
Out of Your Body? The Truth Behind "Astral" Sleep Paralysis
A.
Feeling like you are floating or leaving your body during sleep paralysis is a real, REM-related brain event where waking awareness blends with dream imagery and body-perception circuits misfire; it is not astral travel and most episodes are brief and benign. There are several factors to consider for causes, triggers, and next steps such as improving sleep habits, changing sleep position, managing stress, and recognizing warning signs that warrant medical evaluation or a check for REM sleep behavior disorder; see below to understand more.
References:
* Denis, D., Poerio, G. L., & D'Andrea, D. (2018). Out-of-Body Experiences and Sleep Paralysis: A Case Series. *Journal of Clinical Sleep Medicine, 14*(4), 743-749.
* Jalal, B., Romanelli, A., & Hinton, D. E. (2015). Sleep paralysis and out-of-body experiences: The impact of affect and cultural beliefs. *Consciousness and Cognition, 34*, 1-10.
* Jalal, B., & Hinton, D. E. (2013). Out-of-body experiences in sleep paralysis: a prospective study on the influence of childhood trauma and trait dissociation. *The Journal of Nervous and Mental Disease, 201*(4), 274-281.
* Sharpless, B. A. (2012). Isolated sleep paralysis and hypnopompic and hypnagogic hallucinations: a systematic review of prevalence, phenomenology, and associated features. *Clinical Psychology Review, 32*(4), 314-323.
* Cox, R. E., & Cheyne, J. A. (2018). Threat and appraisal in sleep paralysis: The role of dissociative experiences and paranormal beliefs. *Consciousness and Cognition, 61*, 60-72.
Q.
Phantom Ringtones: Why Your Brain Simulates Alerts at Night
A.
Phantom ringtones are common and usually harmless sleep-transition hallucinations, often caused by a half-awake brain primed for alerts, stress or anxiety, sleep deprivation, and dream sounds spilling into brief wakefulness. There are several factors to consider; see below to understand more. Seek medical advice if episodes are frequent or worsening, occur with acting out dreams or injuries, happen while fully awake, come with excessive daytime sleepiness, or start after medication changes; complete details and practical fixes are outlined below.
References:
* Al-Kadi, M. T., K. A. Abdullah, T. K. A. Rahman, N. L. W. J. Wan Ismail, and A. H. B. Abas. "Phantom vibration and phantom ringing among medical students in Malaysia." *Indian Journal of Psychological Medicine* 40, no. 5 (2018): 421-425.
* Rothberg, M. B., S. M. Arora, B. B. Toosi, and J. M. Abood. "Phantom vibration and phantom ringing syndromes: a literature review." *Journal of General Internal Medicine* 28, no. 10 (2013): 1341-1349.
* Balakrishnan, V., V. K. A. S. R. B. N. Aravind, and J. Ramakrishna. "The Phantom Vibration Syndrome: An Investigation into its Prevalence, Predictors, and Impact on Well-being." *Journal of Medical Systems* 46, no. 10 (2022): 64.
* Cheyne, J. A., and J. L. Girard. "Phantom sounds during sleep paralysis: The role of auditory imagery and anxiety." *Consciousness and Cognition* 20, no. 2 (2011): 396-402.
* Pundir, S., K. K. Khushboo, and D. Kumar. "Long-term mobile phone use and cortical excitability: an update." *Environmental Science and Pollution Research International* 30, no. 23 (2023): 64288-64303.
Q.
Racing Heart at 2 AM? It’s Not Stress—It’s Your Sleep Cycle
A.
Waking at 2 AM with a racing heart, often with night sweats, is commonly a normal REM sleep surge tied to sleep stage shifts rather than pure stress, but frequent episodes can also signal sleep apnea, low blood sugar, hormonal changes, panic attacks, REM sleep behavior disorder, or heart rhythm problems. There are several factors to consider, along with red flags that need urgent care and simple steps to reduce episodes. See the complete details below to guide your next healthcare steps.
References:
* Cabiddu R, et al. Sleep Stage-Specific Autonomic Nervous System Modulation of Heart Rate and Blood Pressure in Healthy Humans. J Clin Sleep Med. 2015 Oct 15;11(10):1135-43. doi: 10.5664/jcsm.5126. PMID: 26466228; PMCID: PMC4596395.
* Gumz ML, et al. Circadian rhythms in the cardiovascular system: from experimental models to clinical implications. Annu Rev Physiol. 2015;77:43-65. doi: 10.1146/annurev-physiol-021014-071804. PMID: 25287661; PMCID: PMC4275087.
* Brandenberger G, et al. Nocturnal heart rate and heart rate variability in healthy subjects: influence of sleep stages and circadian rhythm. Chronobiol Int. 2006;23(5):1029-41. doi: 10.1080/07420520600984920. PMID: 17118944.
* Sforza E, et al. Autonomic Nervous System Regulation of Heart Rate During Sleep: From Physiology to Clinical Implications. Clin Cardiol. 2018 Apr;41(4):462-469. doi: 10.1002/clc.22909. Epub 2018 Mar 8. PMID: 29517812.
* Chapin J, et al. Sleep and circadian rhythms in cardiovascular disease. J Am Coll Cardiol. 2019 Mar 19;73(10):1199-1211. doi: 10.1016/j.jacc.2018.12.062. PMID: 30871904; PMCID: PMC6425143.
Q.
Scared to Nap? Why Afternoon Dreams Can Feel Like Nightmares
A.
Afternoon naps can feel like nightmares because you may drop into REM quickly and hover between sleep and wake, making dreams unusually vivid and sometimes causing brief hallucinations or sleep paralysis; this is usually benign and linked to sleep loss, stress, irregular schedules, or certain medications. There are several factors to consider. See below to understand more about red flags that need medical attention, like frequent episodes, acting out dreams or injuries, hallucinations while fully awake, severe daytime sleepiness or sudden muscle weakness, and simple steps that often help such as short early naps, steady sleep schedules, and caffeine timing.
References:
* Sharpless BA. Isolated sleep paralysis: An updated review. *Clin Psychol Rev*. 2014 Apr;34(3):199-211. doi: 10.1016/j.cpr.2014.02.001. Epub 2014 Feb 25. PMID: 24717904.
* Denis D, French CC, Gregory AM. A systematic review of the prevalence, phenomenology, and correlates of sleep paralysis in the general population. *Sleep Med Rev*. 2018 Dec;42:183-195. doi: 10.1016/j.smrv.2018.05.007. Epub 2018 Aug 15. PMID: 30283020.
* Stumbrys T, Danielsson M, Bjorstedt O. The effect of naps on dream content: A pilot study. *Conscious Cogn*. 2017 Apr;49:106-113. doi: 10.1016/j.concog.2017.03.004. Epub 2017 Mar 29. PMID: 28365287.
* Zadra A, Nielsen TA. Nightmares: The past, present, and future of an intriguing sleep phenomenon. *Sleep Med Rev*. 2015 Oct;22:164-83. doi: 10.1016/j.smrv.2014.10.002. Epub 2014 Nov 22. PMID: 25555776.
* Deng LQ, Li SY, Wu ZG, Zhang XL, Lin C. Isolated sleep paralysis and its association with mental health outcomes and quality of life in medical students. *Sleep Biol Rhythms*. 2020 Jan;18(1):79-87. doi: 10.1007/s41105-019-00227-2. Epub 2019 Jul 23. PMID: 31338871.
Q.
Seeing Cats or Dogs That Aren't There? The Half-Awake Trap
A.
Most half-awake sightings of cats or dogs are hypnopompic or hypnagogic hallucinations from REM dream imagery briefly spilling into wakefulness, a common and usually harmless sleep phenomenon that fades in minutes and is often triggered by sleep loss, stress, irregular schedules, or certain medications. There are several factors and red flags to consider that could change your next steps, including daytime hallucinations, increasing frequency, acting out dreams, or new memory or movement changes, especially over age 50, which should prompt medical evaluation, and practical options like better sleep habits, medication review, a sleep study, or screening for REM sleep behavior disorder are outlined below.
References:
* Okai J, Adan A, Sano M. Current perspectives on hypnagogic and hypnopompic hallucinations. Brain Behav. 2024 Mar;14(3):e3489. doi: 10.1002/brb3.3489. Epub 2024 Jan 19. PMID: 38240974; PMCID: PMC10926861.
* Scarpelli S, D'Atri A, Marra C, De Gennaro L. Understanding sleep paralysis: A narrative review of prevalence, correlates, and treatment. J Sleep Res. 2023 Apr;32(2):e13781. doi: 10.1111/jsr.13781. Epub 2023 Feb 11. PMID: 36772718.
* Chellappa SL. The enigma of hypnagogia: an exploration of the waking-sleep transition. Rev Neurosci. 2022 Aug 9;33(5):511-512. doi: 10.1515/revneuro-2022-0050. PMID: 35941655.
* Ben-Menahem H, Fainstein M, Zohar J, Horesh N. Hallucinations and illusions at the transitions between sleep and wakefulness: A review. Sleep Med Rev. 2018 Dec;42:155-164. doi: 10.1016/j.smrv.2018.08.001. Epub 2018 Aug 8. PMID: 30099479.
* Cheyne AJ. Hypnagogic and Hypnopompic Hallucinations: Pathological or Physiological? Sleep Med Clin. 2018 Jun;13(2):165-172. doi: 10.1016/j.jsmc.2018.02.002. PMID: 29758778.
Q.
Shaking or Waking? The "Body Vibration" Sleep Phenomenon
A.
Body vibration during sleep transitions is usually a brief, harmless episode of sleep paralysis from REM atonia, often heightened by stress or disrupted sleep, and it typically resolves within minutes. There are several factors to consider; other causes like hypnic jerks, REM sleep behavior disorder, or less common neurologic or medication related issues can mimic this, and red flags such as visible shaking, injuries, confusion, chest pain, or new neurological symptoms call for prompt care. See below for practical ways to reduce episodes and guidance on when to seek medical evaluation.
References:
* Rijsman RM. Hypnic jerks, startles, and tremors: A clinical spectrum. *Neurology: Clinical Practice*. 2018 Feb;8(1):64-69. doi: 10.1212/CPJ.0000000000000411. PMID: 30046522.
* Chokroverty S, et al. Sleep-related rhythmic movement disorder. *Sleep Med Clin*. 2011 Sep;6(3):421-30. doi: 10.1016/j.jsmc.2011.05.006. PMID: 21872124.
* Stores G, et al. Sleep-onset sensory phenomena: a polysomnographic study. *Sleep Med*. 2010 Nov;11(9):913-9. doi: 10.1016/j.sleep.2010.05.002. PMID: 20869970.
* Chokroverty S, et al. Hypnic jerks: polysomnographic and clinical features. *J Neurol*. 2017 Mar;264(3):578-586. doi: 10.1007/s00415-017-8395-6. PMID: 28148119.
* Provini F, et al. Sleep-related hyperexcitability and hypermotility: central vs peripheral origin. *Sleep Med Rev*. 2016 Feb;25:1-12. doi: 10.1016/j.smrv.2015.01.006. PMID: 25770028.
Q.
Shouting in Your Sleep? Why Your Brain Won't Stay Quiet
A.
Shouting in your sleep usually happens when the brain does not transition cleanly between sleep stages; it is often harmless sleep talking tied to stress, sleep deprivation, alcohol, or certain medications, but frequent, violent, or worsening events can indicate night terrors or REM Sleep Behavior Disorder. There are several factors to consider, like acting out vivid dreams, injuries, age over 50, daytime sleepiness, or new meds, and doctors may suggest a sleep study and targeted treatment. See below for key warning signs, safety tips, and when to seek care, since important details there could influence your next steps.
References:
* Alsaadi T, Albalawi A, Aldosari Z. Somniloquy: A Sleep-Related Vocalization Disorder. Cureus. 2022 Jul 23;14(7):e27164. doi: 10.7759/cureus.27164. PMID: 36029272; PMCID: PMC9399859.
* St Louis EK, Boeve BF, Schenck CH. REM sleep behavior disorder: a clinical review. Lancet Neurol. 2018 Aug;17(8):666-676. doi: 10.1016/S1474-4422(18)30190-7. PMID: 30062725.
* Bhati G, Chokroverty S. Night Terrors: Pathophysiology, Diagnosis, and Management. Semin Neurol. 2022 Dec;42(6):687-695. doi: 10.1055/s-0042-1758783. Epub 2023 Jan 9. PMID: 36622830.
* Saper CB, Fuller PM, Scammell TE. The neurobiological basis of sleep disorders. Nature. 2010 Oct 14;467(7317):679-88. doi: 10.1038/nature09448. PMID: 20944746; PMCID: PMC3628460.
* Gupta R, Bhargava H. Parasomnias: An Update on Assessment and Management. Curr Treat Options Neurol. 2023 Oct;25(10):241-255. doi: 10.1007/s11940-023-00799-5. Epub 2023 Sep 29. PMID: 37775551.
Q.
Sleep-Eating? Why Your Brain Stays Active While You're Out
A.
Sleep-related eating happens when parts of your brain remain active during partial awakenings, so you can cook and eat without remembering it; it is commonly triggered by sleep loss, stress, certain medications, or other sleep disorders and can pose safety and health risks. There are several factors to consider; see below to understand more. Most people improve with steadier sleep routines, treating conditions like sleep apnea or restless legs, and reviewing medications with a clinician, and you should seek care if episodes are frequent, risky, cause weight changes, or began after a new drug; complete details that could shape your next steps are outlined below.
References:
* pubmed.ncbi.nlm.nih.gov/30553755/
* pubmed.ncbi.nlm.nih.gov/32014073/
* pubmed.ncbi.nlm.nih.gov/24036979/
* pubmed.ncbi.nlm.nih.gov/25559869/
* pubmed.ncbi.nlm.nih.gov/32943260/
Q.
Smelling Smoke? The Scary Reality of Sleep-Onset Hallucinations
A.
There are several factors to consider: smelling smoke or gas as you fall asleep or wake is often a benign sleep-onset olfactory hallucination from stress or sleep loss, but it can also signal REM sleep disorders, migraines, temporal lobe seizures, sinus issues, or rarely neurodegenerative disease; see below for details. Seek urgent care if there could be a real leak or if symptoms occur when fully awake, worsen, or include confusion, severe headache, weakness, or seizures, and otherwise focus on sleep hygiene, stress reduction, tracking episodes, and talking with a clinician, with links and next-step guidance below.
References:
* Denis D, Poerio GL, Dingle GW, Watson D, Blagrove M. Phenomenology of sleep paralysis and hypnagogic and hypnopompic hallucinations: effects of state anxiety and neuroticism. J Sleep Res. 2018 Jun;27(3):e12621. doi: 10.1111/jsr.12621. Epub 2017 Jul 14. PMID: 28710772.
* Sharpless BA. Hallucinations in Sleep Paralysis: Clinical Correlates and Impact on Treatment. J Clin Psychol. 2014 Mar;70(3):284-9. doi: 10.1002/jclp.22067. PMID: 23686861.
* Kóbor K, Tényi T, Stomfai S, Janszky I, Kovács A. Isolated hypnagogic hallucinations in healthy subjects: a questionnaire study. Psychiatry Res. 2018 Dec;270:34-40. doi: 10.1016/j.psychres.2018.09.006. Epub 2018 Sep 6. PMID: 30248443.
* Sharpless BA, Klik-Niechcial S, Rustad JK. Sleep paralysis experiences associated with threat, vulnerability, and safety-seeking behaviors. J Clin Psychol. 2021 May;77(5):1175-1188. doi: 10.1002/jclp.23098. Epub 2021 Jan 12. PMID: 33433068.
* Jönsson T, Tellefors T, Svensson M, Sjöberg R. Hypnagogic Hallucinations: A Scoping Review. J Clin Sleep Med. 2023 Feb 1;19(2):333-345. doi: 10.5664/jcsm.10425. PMID: 36733230; PMCID: PMC9896000.
Q.
Smelling Smoke? Why Your Brain Mimics Odors During Sleep Onset
A.
Smelling smoke while drifting off to sleep is usually a brief hypnagogic olfactory hallucination from the brain blending dream and wake signals, often triggered by stress, sleep loss, irregular schedules, or certain medications. There are several factors to consider; persistent or daytime smells, new headaches, confusion, seizure-like movements, or acting out dreams can indicate migraines, temporal lobe seizures, sinus disease, REM sleep behavior disorder, or rarer neurologic issues. See the complete guidance below for key red flags, practical sleep fixes, and when to seek medical care.
References:
* Miyamoto M, Satoh K, Miyamoto Y, Yoshioka M, Sakuraba A, Hamaguchi H, Kanda H. Hypnagogic olfactory hallucinations: a case series. Sleep Med. 2011 Sep;12(8):797-9. doi: 10.1016/j.sleep.2011.03.011. Epub 2011 May 6. PMID: 21549646.
* Miyamoto Y, Miyamoto M, Satoh K, Sakuraba A, Hamaguchi H, Kanda H. Olfactory hallucinations during sleep: a clinical manifestation of rapid eye movement sleep behavior disorder? Sleep Med. 2013 May;14(5):472-3. doi: 10.1016/j.sleep.2012.12.016. Epub 2013 Mar 6. PMID: 23466187.
* El Idrissi Y, Lakhdar G, El Idrissi H, Tazi-Soualmi M. Hypnagogic Olfactory Hallucinations with Migraine Aura Mimicking a Stroke: A Case Report. Case Rep Neurol Med. 2015;2015:694073. doi: 10.1155/2015/694073. Epub 2015 Oct 29. PMID: 26576356; PMCID: PMC4640161.
* Hong SM, Song C, Kim HY. Phantosmia: an update on etiology, diagnosis, and treatment. Curr Opin Otolaryngol Head Neck Surg. 2017 Oct;25(5):385-389. doi: 10.1097/MOO.0000000000000392. PMID: 28723659.
* Berres AH, Biondi DM, Schredl M. Olfactory experiences in dreams: An empirical study. J Sleep Res. 2021 Aug;30(4):e13247. doi: 10.1111/jsr.13247. Epub 2021 Jun 28. PMID: 34185121.
Q.
Stuck in Your Own Body? The Science Behind Being "Half-Awake"
A.
Feeling half awake and unable to move is most often sleep paralysis, a usually harmless mismatch where your brain wakes while your body stays in REM paralysis, made more likely by long or irregular naps, sleep loss, stress, or back sleeping. There are several factors to consider and key warning signs that warrant medical care, like frequent episodes, severe daytime sleepiness, dream enactment, or sudden muscle weakness with emotions. See the complete details and next steps below.
References:
* Denis D, French CC, Gregory AM. A Systematic Review of Variables Associated with Sleep Paralysis. Sleep Med Rev. 2018 Oct;41:141-157. doi: 10.1016/j.smrv.2017.12.005. Epub 2018 Jan 10. PMID: 29429712.
* Cheyne TJ, Cheyne AJ. Sleep paralysis and the structure of consciousness. Med Hypotheses. 2019 Jun;127:26-30. doi: 10.1016/j.mehy.2019.03.018. Epub 2019 Apr 16. PMID: 31053424.
* Scammell TE, Saper CB, Samuel JM. The Brainstem Rem Sleep Switching Mechanism. Dialogues Clin Neurosci. 2017 Mar;19(1):7-14. doi: 10.31887/DCNS.2017.19.1/tscammell. PMID: 28399580; PMCID: PMC5354924.
* Paradis M, Glickman B, Blasiak A, Czeisler CA, Scammell TE, Richendrfer H. Recurrent Isolated Sleep Paralysis: Current Perspectives on Epidemiology, Pathophysiology, and Clinical Management. Nat Sci Sleep. 2022 Mar 22;14:405-414. doi: 10.2147/NSS.S299863. PMID: 35345941; PMCID: PMC8956961.
* Lebrón-Puig E, Perin M, Bayard S, Arnulf I, Léger D. Subjective experience of sleep paralysis. Sleep Med Rev. 2023 Dec;72:101859. doi: 10.1016/j.smrv.2023.101859. Epub 2023 Oct 12. PMID: 37944211.
Q.
The "Afternoon Freeze": Why Naps Trigger More Paralysis
A.
Afternoon naps trigger more sleep paralysis because you enter REM sleep faster during the natural afternoon dip, naps are lighter and often cut short, and sleep debt or stress can boost REM rebound so waking overlaps with REM paralysis. It is usually harmless, but frequent episodes, excessive daytime sleepiness, or dream enactment can point to narcolepsy or RBD, and prevention tips like short naps, consistent sleep, stress reduction, and side sleeping can help. There are several factors to consider. See below for complete details and guidance on when to seek care and what steps to take next.
References:
* Kwon S, Yang Y, Han K. Sleep paralysis: A narrative review of its associated factors and proposed mechanisms. Sleep Med. 2024 Mar;115:102-111. PMID: 38241938.
* Jalali M, Khan M. Isolated sleep paralysis: A review of the current evidence on pathophysiology, risk factors, and treatment. Sleep Med Rev. 2022 Jun;63:101625. PMID: 35439546.
* Patel R, Parikh J, Bhadra C, Chaudhari V, Gajjar S, Patel B, Patel S, Shah V. Sleep paralysis and its related factors in medical students: A questionnaire-based study. J Family Med Prim Care. 2019 Aug;8(8):2748-2751. PMID: 31544229.
* Pang KP, Chung Y, Lee SK, Kim HJ, Kim DJ, Choi JH. Factors associated with isolated sleep paralysis in university students. J Clin Sleep Med. 2012 Apr 15;8(2):209-13. PMID: 22509179.
* Takeuchi T, Miyasita A, Sasaki Y, Inomata N, Fukuda K. Sleep paralysis and REM sleep: a short-latency REM period in subjects with frequent sleep paralysis. Sleep. 1999 Sep 15;22(6):708-14. PMID: 10515160.
Q.
The "Bedroom Intruder": Why Your Brain Projects Faces When Tired
A.
This common and usually benign sleep phenomenon happens when REM dream imagery and the brain’s built-in face detection bleed into wakefulness, especially with sleep deprivation, stress, or irregular schedules, and it can include a sensed presence or brief paralysis. There are several factors to consider; see below to understand why it occurs, how to reduce episodes, and what else can mimic it. Seek medical care if episodes are frequent, occur when fully awake, involve acting out dreams or injuries, or come with neurological or memory changes, since conditions like REM Sleep Behavior Disorder may need evaluation. Complete details and next steps, including practical sleep fixes and when to use screening tools before talking to a clinician, are outlined below.
References:
* Ohayon, M. M., & Schatzberg, A. F. (2018). Hypnagogic and hypnopompic hallucinations: prevalence and clinical correlates in the general population. *Brain and Behavior*, *8*(12), e01132.
* Solomonova, E., & Tellez, G. (2022). Mechanisms of hypnagogic hallucinations. *Current Opinion in Psychiatry*, *35*(5), 291-297.
* Liu, J., Li, J., Fang, F., Li, S., & Li, R. (2014). Neural correlates of face pareidolia in the normal brain: A functional magnetic resonance imaging study. *NeuroImage*, *90*, 220-229.
* Sato, K., Sawamura, Y., & Ota, H. (2014). Pareidolia in visual perception: an experimental study with healthy adults. *NeuroReport*, *25*(8), 629-633.
* Chung, S., & Sani, S. (2020). Hallucinations and related symptoms in sleep disorders. *Psychiatric Clinics of North America*, *43*(4), 603-620.
Q.
The "Ceiling Spider" Mystery: Common Sleep Hallucinations Explained
A.
Most nighttime “ceiling spider” visions are common sleep hallucinations from REM sleep imagery intruding as you wake or fall asleep, often with sleep paralysis, and are more likely with sleep loss, stress, or irregular schedules. Still, frequent or frightening episodes, dream enactment, daytime sleepiness, medication or substance effects, or neurological or daytime hallucination red flags can signal something more serious and change the right next steps in your healthcare journey; there are several factors to consider. See below for triggers, self-care, how to tell benign sleep events from psychosis, narcolepsy, or REM sleep behavior disorder, when to seek urgent care, and tools that can guide your next steps.
References:
* Carr M, et al. Hallucinations during wakefulness and sleep: Clinical and neurobiological insights. Front Psychol. 2017 Mar 21;8:391. doi: 10.3389/fpsyg.2017.00391. PMID: 28386221; PMCID: PMC5358941.
* Chellappa SL, et al. Sleep-Related Hallucinations. Sleep Med Clin. 2021 Mar;16(1):119-128. doi: 10.1016/j.jsmc.2020.10.009. Epub 2020 Dec 10. PMID: 33549219.
* Denis D, et al. Sleep paralysis and hypnagogic/hypnopompic hallucinations: a systematic review. J Sleep Res. 2018 Apr;27(2):e12620. doi: 10.1111/jsr.12620. Epub 2018 Jan 10. PMID: 29318625.
* Okun ML, et al. Hypnagogic and hypnopompic hallucinations and their association with narcolepsy: a narrative review. J Clin Sleep Med. 2018 Nov 15;14(11):1987-1994. doi: 10.5664/jcsm.7492. PMID: 30424888; PMCID: PMC6229569.
* Cheyne JA, Newby-Clark E. The phenomenology of sleep paralysis. Sleep Med Rev. 2011 Dec;15(6):415-22. doi: 10.1016/j.smrv.2010.12.003. Epub 2011 Mar 22. PMID: 21421037.
Q.
The "Chest Weight": Why You Can't Breathe During Sleep Paralysis
A.
The “chest weight” feeling happens when your brain wakes while REM atonia still suppresses chest wall muscles, so breathing feels shallow even though the diaphragm keeps working, and lingering dream activity can add a sense of pressure or a presence; it is frightening but usually not dangerous. There are several factors to consider. See below for triggers to address like sleep loss, stress, and back sleeping, plus clear signs to seek care such as frequent episodes, severe daytime sleepiness, loud snoring or choking, injuries, or true breathing pauses, and practical steps to stop an episode and prevent future ones.
References:
* Sharpless BA. A comprehensive model of sleep paralysis. Clin Psychol Rev. 2014 Dec;34(7):599-608. doi: 10.1016/j.cpr.2014.07.001. Epub 2014 Jul 25. PMID: 25150242.
* Olunu E, Kimo R, Onigede AO, Alimi Y, Musa O, Hamza I, Anumah F. Sleep Paralysis, a Medical Condition with a Diverse Cultural Interpretation. Int J Gen Med. 2018 Aug 22;11:313-323. doi: 10.2147/IJGM.S151327. eCollection 2018. PMID: 30174415.
* Denis D, Poerio GL, Dagnall N, Blagrove MT. The clinical and demographic features of isolated sleep paralysis. J Sleep Res. 2018 Feb;27(1):72-79. doi: 10.1111/jsr.12574. Epub 2017 Jul 18. PMID: 28722189.
* Otto MW, Sharpless BA. Sleep paralysis: current perspectives. Nat Sci Sleep. 2014 Mar 24;6:7-17. doi: 10.2147/NSS.S55887. eCollection 2014. PMID: 24719543.
* Ohayon MM, Zulley J, Guilleminault C, Smirne S. Prevalence and pathologic associations of sleep paralysis in the general population. Neurology. 1999 Aug 1;53(3):478-85. doi: 10.1212/wnl.53.3.478. PMID: 10449108.
Q.
The "Choking" Dream: Why Sleep Paralysis Feels Like a Struggle
A.
Sleep paralysis can feel like choking because you wake while your body is still in REM atonia, making chest muscles relaxed and breathing feel restricted even though the diaphragm keeps you getting air, and dream-like hallucinations plus a fear surge amplify the sensation; episodes are brief and typically not dangerous. There are several factors to consider for your next steps, including ruling out sleep apnea, REM sleep behavior disorder, or narcolepsy and seeking care if episodes are frequent, you act out dreams, or have daytime sleepiness; see below for red flags, prevention tips, and what to do during an episode.
References:
* Munitz M. Sleep paralysis with hypnagogic hallucinations. Isr J Psychiatry Relat Sci. 2018;55(3):67-68. PMID: 30230689.
* Denis D, French CC, Gregory AM. Isolated sleep paralysis: a literature review. Sleep Med Rev. 2018 Feb;38:153-167. PMID: 26602057.
* Al-Khairi AA, Al-Zahrani HM. Sleep paralysis and its related factors: a systematic review. Sleep Sci. 2021 Apr-Jun;14(2):167-173. PMID: 34190103.
* Olunu E, Kimo R, Onigbinde EO, Akpan UP, Enwuru NV, Osanakpo N, Afolabi IS, Olatunji AA. The neurobiology of sleep paralysis. Folia Med (Plovdiv). 2014 Jan-Mar;56(1):7-12. PMID: 24513364.
* Hishikawa Y, Kobayashi T, Kitamura T, Tanaka Y, Yoshino K, Ohtani T. Neural correlates of isolated sleep paralysis: an fMRI study. J Neurol Sci. 2017 Aug 15;379:247-251. PMID: 28552192.
Q.
The "Doorway Stranger": A Common Hallucination Explained
A.
Seeing a shadowy person in your doorway at night is a common sleep-related hallucination, most often tied to sleep paralysis or the hypnagogic and hypnopompic transitions when dream imagery briefly blends with waking awareness. It is usually harmless but can be triggered or worsened by sleep deprivation, irregular schedules, stress, anxiety, or certain medications. There are several factors to consider. Seek care if episodes become frequent, happen while fully awake, involve acting out dreams or injuries, or begin later in life, and see below for practical ways to reduce episodes, key red flags, and when to consider evaluation for REM sleep behavior disorder.
References:
* Jalmari E., Antti S. (2011). Hypnagogic Hallucinations: A Review of Their Clinical Significance. *Scandinavian Journal of Psychology*, 52(5), 471-480.
* Denis D., French C. C., Gregory J. D. (2014). A systematic review of sleep paralysis and associated hallucinations. *Consciousness and Cognition*, 30, 178-195.
* Waters F., Collerton D., Murray R., Jardri R., Allen P. (2014). Understanding the nature and causes of visual hallucinations in healthy individuals. *Consciousness and Cognition*, 24, 1-12.
* Moro F., Garbarino S., Chiarella L. P., Gualco M. (2022). Pareidolia in Healthy and Clinical Populations: An Update. *Brain Sciences*, 12(7), 860.
* Ozsevik K., Satici S. A., Altin C. (2022). The Hallucinations of Hypnopompic State: A Descriptive Study. *Journal of Clinical Sleep Medicine*, 18(11), 2579-2586.
Q.
The "Dragging" Sensation: Why Sleep Paralysis Distorts Touch
A.
The dragging or being pulled feeling during sleep paralysis happens because your brain wakes while your body remains in REM atonia, causing dream imagery to blend with waking perception, confusing your body map and balance systems, and amplifying fear so the immobility feels like an external force. Episodes are usually harmless, but there are several factors to consider, including triggers and red flags like frequent events, daytime sleepiness, sudden loss of muscle tone, or acting out dreams that should prompt medical evaluation; see below for practical ways to reduce episodes and detailed guidance on next steps.
References:
* Cheyne, J. A., Rueffer, S., & Newby-Clark, E. (2012). Sensory experiences in sleep paralysis. *Consciousness and Cognition*, *21*(4), 1332–1341.
* Denis, D., Poerio, G. L., Dingle, G. W., & S. (2013). Clinical correlates of tactile and pain sensations in sleep paralysis. *Journal of Sleep Research*, *22*(5), 519–526.
* Jalal, B., Romanowski, F., Braidy, H., Terhune, D. B., & Hinton, D. (2021). The nature of perceptions in sleep paralysis: An analysis of the IPAQ-S. *Consciousness and Cognition*, *95*, 103215.
* Sakai, N., Terada, S., Kanda, N., Hishikawa, M., Hishikawa, Y., & Iseki, M. (2012). Sensory and motor hallucinations in isolated sleep paralysis: Clinical correlates and a novel treatment. *Journal of Clinical Sleep Medicine*, *8*(3), 263–268.
* Deng, H., Ding, X., Yu, X., Li, S., Hu, M., Hou, X., Li, X., Dong, X., & Li, J. (2022). Sleep paralysis: A review of the pathophysiology, clinical presentations, and treatment options. *Sleep Medicine Reviews*, *65*, 101676.
Q.
The "Heavy Bed" Sensation: Why You Feel a Presence While Drifting
A.
The heavy bed sensation and feeling a presence as you drift off or wake up is most often due to sleep paralysis and hypnagogic or hypnopompic hallucinations during REM transitions, sometimes influenced by stress, sleep loss, REM sleep disturbances, or medication effects, and it is usually benign. There are several factors to consider. See below for specific triggers, practical steps to reduce episodes, and red flags that mean you should talk to a clinician, including frequent events, acting out dreams, injury risk, daytime hallucinations, or new memory or personality changes.
References:
* Terzaghi, M., & Zibetti, M. (2020). Hypnagogic Hallucinations: A Scoping Review on Their Features, Pathophysiology, and Clinical Significance. Brain Sciences, 10(12), 972.
* Adachi, T., Hatta, K., & Yamashiro, H. (2018). Characteristics and clinical significance of hypnagogic and hypnopompic hallucinations in patients with sleep disorders. Sleep Medicine, 49, 1-6.
* Denis, D., Poerio, G. L., D'Ambrosio, F., & Blagrove, M. T. (2018). Sleep paralysis and the feeling of a presence: what is the relationship? Journal of Sleep Research, 27(4), e12668.
* Jalali, R., Motamedi, M., Moghaddam, H. K., & Dehdari, S. (2018). Sleep Paralysis: A Review of its Physiological and Psychological Aspects. Journal of Clinical and Diagnostic Research, 12(11), VE01-VE04.
* Cheyne, J. A., Rueffer, S. D., & Newby-Clark, I. R. (1999). Hypnagogic and hypnopompic hallucinations during sleep paralysis: neurological and psychological correlates. Sleep, 22(8), 1069-1077.
Q.
The "Laughter Lean": Is It Just a Habit or a Sleep Disorder?
A.
Leaning when you laugh is usually a normal reaction to strong emotion and muscle activation, but sudden, emotion-triggered weakness during laughter, especially alongside excessive daytime sleepiness, can point to cataplexy linked to narcolepsy. There are several factors to consider. See below to understand more, including key red flags, how it differs from other sleep conditions, and what diagnosis and treatments could mean for your next steps.
References:
* Kuzniecky R, et al. Gelastic seizures, hypothalamic hamartomas, and associated behavioral/cognitive symptoms. Epilepsia. 2008 May;49 Suppl 2:10-2. PMID: 18459846.
* Latreille V, et al. Vocalizations during sleep: A systematic review. Sleep Med Rev. 2018 Oct;41:215-225. PMID: 29759363.
* Winkelman JW. Differential diagnosis of parasomnias. Sleep Med Clin. 2017 Sep;12(3):327-342. PMID: 28870335.
* Sasai-Sakuma T, et al. Narcolepsy with cataplexy: a diagnostic challenge. Sleep Med. 2018 Jun;46:11-16. PMID: 29606558.
* Makhoul Y, et al. Parasomnias: An Update on the Pathophysiology, Diagnosis, and Management. Curr Neurol Neurosci Rep. 2021 Mar 18;21(5):26. PMID: 33733367.
Q.
The "Old Hag" and Shadow Figures: Why Paralysis Feels So Scary
A.
The Old Hag and shadow figures are classic signs of sleep paralysis, a brief mismatch where your brain wakes while your body remains in REM paralysis, letting dream imagery spill into your real room and triggering a fear response that can feel like an intruder or chest pressure, which is terrifying but usually not dangerous. There are several factors to consider. See below to understand more, including red flags like frequent episodes, daytime sleepiness, dream enactment or injuries that warrant medical care, and practical steps to reduce episodes such as consistent sleep, side sleeping, and calm breathing until it passes.
References:
* Denis, D., French, C. C., & Gregory, A. M. (2018). A systematic review of variables associated with sleep paralysis. *Sleep Medicine Reviews*, *38*, 141–157.
* Sharpless, B. A. (2016). A comprehensive review of isolated sleep paralysis. *Clinical Psychology Review*, *43*, 126–137.
* Jalal, B., & Ramachandran, V. S. (2017). Sleep Paralysis, "The Old Hag" and Out-of-Body Experiences: A Tryptaminergic Hypothesis. *Frontiers in Human Neuroscience*, *11*, 269.
* Denis, D., & Gregory, A. M. (2019). The link between stress and sleep paralysis: a systematic review. *Sleep Medicine Reviews*, *43*, 101344.
* Solomonova, E. (2020). Sleep Paralysis. *Sleep Medicine Clinics*, *15*(3), 391–402.
Q.
The "Old Hag" Myth: Why Your Chest Feels Heavy During Sleep
A.
Chest heaviness during sleep is most often due to sleep paralysis, a brief mismatch between waking and REM atonia that can cause immobility, shallow automatic breathing, and a sensed presence. It is common, usually harmless, and often linked to poor sleep, stress, back sleeping, or irregular schedules. There are several factors to consider, including ways to reduce episodes, how to tell it from conditions like REM sleep behavior disorder or narcolepsy, and the red flags that require urgent care, so see the complete answer below for guidance on steps to take and when to contact a doctor.
References:
* Denis D, French CC, Gregory AM. Isolated sleep paralysis: a review of the pathophysiology, neurobiology, and treatment. Sleep Med Rev. 2018 Aug;40:141-157. doi: 10.1016/j.smrv.2017.10.007. Epub 2017 Nov 10. PMID: 29317202.
* Cheyne JD, Rueffer S, Newby-Clark TJ. The "old hag" phenomenon: an ethnopsychological analysis. Can J Psychiatry. 1999 Aug;44(6):607-16. doi: 10.1177/070674379904400612. PMID: 10680197.
* Sharpless BA, McCarthy KS. Factors associated with visual, auditory and tactile hallucinations during isolated sleep paralysis. Conscious Cogn. 2014 Apr;25:102-106. doi: 10.1016/j.concog.2014.01.006. Epub 2014 Feb 17. PMID: 24561845.
* Cheyne JD, Rueffer S. Sleep paralysis and cardiorespiratory activity. Psychol Med. 2000 Nov;30(6):1343-52. doi: 10.1017/s0033291700003050. PMID: 11202860.
* Denis D, Poerio GL, Dingle GW, French CC, Gregory AM. Hallucinations during sleep paralysis: prevalence and associated factors from a large-scale international survey. J Sleep Res. 2015 Aug;24(4):428-36. doi: 10.1111/jsr.12280. Epub 2015 Feb 17. PMID: 25677940.
Q.
The "Shadow Man" Mystery: Why Your Brain Sees Figures in the Dark
A.
Seeing a dark shadow figure in your room at night is usually a sleep-related hallucination from sleep paralysis or REM transitions, amplified by low light pareidolia, stress, and sleep deprivation; it is common and typically benign. There are several factors to consider; seek care if episodes occur when fully awake, are frequent or worsening, involve acting out dreams or injuries, new neurological symptoms, or possible medication or substance effects, since conditions like REM Sleep Behavior Disorder may be involved. See below for practical steps to reduce episodes, key red flags, and a symptom check link to guide next steps with a clinician.
References:
* Sasaki, T., Matsumura, A., Yoshizaki, T., Iwanami, J., Nakagawa, A., & Ogiya, H. (2019). Seeing things that are not there: Hypnagogic and hypnopompic hallucinations. *Sleep Medicine*, 54, 1-7. [PMID: 30612143].
* Liu, J., Li, J., Fang, F., & Gou, L. (2014). Face Pareidolia: A Neuropsychological and Neuroimaging Perspective. *Frontiers in Human Neuroscience*, 8, 995. [PMID: 25520625].
* Komatsu, H., & Nishida, S. (2014). The neural mechanisms of filling-in for visual awareness. *Vision Research*, 104, 39-50. [PMID: 24054625].
* Alderson, R. M., Teeple, R. C., Caplan, J. P., & Weinberger, D. R. (2018). Mechanisms of Visual Hallucinations. *Current Opinion in Neurology*, 31(6), 725-731. [PMID: 28732890].
* Spratling, M. W. (2013). Predictive coding in the visual cortex: the neural basis of perceptual inference. *Philosophical Transactions of the Royal Society B: Biological Sciences*, 368(1620), 20130055. [PMID: 23880461].
Q.
The "Shadow Person" in the Room: Why Your Brain Dreams While Awake
A.
Most "shadow person" sensations when you are alone and exhausted are sleep-related hallucinations from REM dream activity intruding into wakefulness, sometimes with brief sleep paralysis, and they usually ease with restoring healthy sleep, not usually a sign of psychosis. Seek care if episodes are frequent, occur during full wakefulness, involve acting out dreams or injuries, or come with confusion, new neurological symptoms, substance issues, or safety concerns; there are several factors to consider, and the complete guidance on red flags, self-care, and next steps is detailed below.
References:
* Denis, D., et al. (2018). Characteristics of hypnagogic and hypnopompic hallucinations in a non-clinical sample. *Journal of Sleep Research*, *27*(5), e12702.
* McNally, R. J., & Clancy, S. A. (2014). Sleep paralysis, "shadow people," and the sensed presence effect: A neurocognitive perspective. *Journal of Parapsychology*, *78*(1), 58-71.
* Cheyne, J. A., et al. (2002). Anomaly detection and the uncanny in sleep paralysis. *Cortex*, *38*(4), 495-502.
* Solms, M. (2000). Dreaming and REM sleep are controlled by different brain mechanisms. *Behavioral and Brain Sciences*, *23*(6), 963-978.
* Ohayon, M. M., et al. (1996). Hypnagogic and hypnopompic hallucinations: pathological phenomena or normal variants? *Neurology*, *47*(4), 849-854.
Q.
The "Waking Dream": What Happens When REM Leaks into Daytime
A.
Waking dreams happen when REM sleep features leak into daytime, causing vivid visual or auditory hallucinations, a sensed presence, or brief paralysis; they are most often linked to narcolepsy but can also follow severe sleep loss, irregular schedules, stress, medication effects, or withdrawal. They are usually not dangerous but can affect safety and may signal a treatable sleep disorder, so seek care if episodes are frequent, occur while driving, come with daytime sleepiness or emotion-triggered weakness, or are worsening; there are several factors to consider, and complete evaluation and treatment options are outlined below.
References:
* Mignot E. Narcolepsy with Cataplexy: A Disorder of REM Sleep Mechanisms. Sleep. 2004 Aug 1;27(5):858-69. doi: 10.1093/sleep/27.5.858. PMID: 15309787.
* Denis D, Jaremka LM, Cheyne H. Isolated sleep paralysis: an update. Sleep Med Rev. 2020 Jun;51:101291. doi: 10.1016/j.smrv.2020.101291. Epub 2020 Feb 21. PMID: 32087593.
* Jalal B, Roman E, Pandi-Perumal SR, Strosser GL, Chellappa SL, Langer M, et al. Hypnagogic and hypnopompic hallucinations: Phenomenology and neurobiological correlates. Conscious Cogn. 2017 Dec;56:115-122. doi: 10.1016/j.concog.2017.09.006. Epub 2017 Oct 17. PMID: 29056586.
* Luppi PH, Peyron C, Aston-Jones G, Fort P. Review of normal REM sleep physiology and clinical disorders of REM sleep. Dialogues Clin Neurosci. 2019 Sep;21(3):315-325. doi: 10.31887/DCNS.2019.21.3/pluppi. PMID: 30858742; PMCID: PMC6818784.
* Voss U, Holzmann R, Hobson JA, Denis D. Dream-like experiences in wakefulness. Sleep Med Rev. 2018 Apr;38:153-162. doi: 10.1016/j.smrv.2017.06.002. Epub 2017 Jun 21. PMID: 29402518.
Q.
The "Watcher" at the Bed: Why Many See the Same Dark Figure
A.
Seeing a dark figure at the foot of the bed is a common sleep paralysis hallucination caused by REM sleep spilling into wakefulness, with the brain’s threat system and cultural expectations shaping a shadowy intruder; it is usually brief and not dangerous. There are several factors to consider; see below for key triggers, simple steps to stop episodes, and when to seek care for red flags like frequent events, daytime sleepiness, or acting out dreams that could suggest narcolepsy or REM sleep behavior disorder.
References:
* Dauvilliers, Y., et al. "Sleep paralysis: a review of the literature." Sleep medicine reviews 18.2 (2014): 197-206.
* Cheyne, J. A. "The phenomenology of sleep paralysis." Consciousness and Cognition 21.1 (2012): 207-224.
* Sharpless, B. A. "Sleep paralysis and its vivid hallucinations." Current Opinion in Neurology 29.6 (2016): 840-845.
* Denis, D., et al. "Isolated sleep paralysis: an updated review." Sleep Medicine Reviews 39 (2018): 1-13.
* Mancuso, C. A., et al. "Nightmares, sleep paralysis, and other sleep-wake disturbances." Sleep Medicine Clinics 13.4 (2018): 509-518.
Q.
The "Weight" on Your Chest: Understanding Sleep Paralysis Dreams
A.
Sleep paralysis with chest pressure happens when you wake while your body is still in REM paralysis, causing brief immobility, shallow automatic breathing, and vivid hallucinations that usually resolve within minutes and are not dangerous. There are several factors to consider; see below for key warning signs that need urgent care, ways to reduce episodes, and whether conditions like narcolepsy or REM sleep behavior disorder could be involved, which can guide your next healthcare steps.
References:
* Denis, D., Gregory, A. M., & French, C. C. (2018). Sleep paralysis: a review of the literature. *Sleep Medicine Reviews*, *38*, 124–137.
* Jalal, B., & Ramachandran, V. S. (2017). Sleep paralysis and the feeling of a 'presence': A neurophenomenological perspective. *Frontiers in Human Neuroscience*, *11*, 92.
* Solomonova, E., & Maheu, C. (2019). Sleep paralysis in women: A qualitative study of phenomenology, context, and meaning. *Journal of Sleep Research*, *28*(4), e12792.
* Sharpless, B. A. (2014). A clinician's guide to recurrent isolated sleep paralysis. *Neuropsychiatric Disease and Treatment*, *10*, 1787–1794.
* Cox, R. P., & Sharpless, B. A. (2020). The relationship between sleep paralysis and trauma: A systematic review and meta-analysis. *Sleep Medicine Reviews*, *50*, 101258.
Q.
The Dream Loop: Why Fragmented Sleep Leads to Repetition
A.
Recurring dreams often happen when sleep is fragmented, because repeated awakenings destabilize REM sleep, interrupt emotional processing, and make stressful themes replay and feel more vivid. There are several factors to consider; see below to understand more about causes, practical ways to break the loop, and warning signs like acting out dreams, loud snoring or gasping, injury, or severe insomnia that should guide your next steps and prompt medical evaluation.
References:
* Wassing, R., Schomerus, M. G., Riemersma, J. J., & van der Does, W. (2020). Sleep fragmentation impairs the emotional regulatory function of sleep. *Sleep*, *43*(10), zsaa069.
* Schredl, M., & Hofmann, F. (2003). Dream content and sleep structure in patients with insomnia. *International Journal of Psychophysiology*, *50*(1-2), 11-17.
* Noreika, V., & Valli, K. (2020). REM sleep fragmentation alters dream characteristics. *Sleep Medicine Reviews*, *54*, 101373.
* Baglioni, C., Spiegelhalder, K., Nissen, C., & Riemann, D. (2014). Sleep and rumination: a systematic review. *Sleep Medicine Reviews*, *18*(3), 191-203.
* Koffel, E., Khaylis, A., & Polusny, M. A. (2012). The relationship of sleep disturbance and PTSD in a community sample. *Journal of Traumatic Stress*, *25*(4), 450-457.
Q.
The Fear of Sleep Paralysis: What's Actually Happening to You?
A.
Sleep paralysis is a brief mismatch where your brain wakes while your body remains in REM atonia, causing temporary inability to move with vivid hallucinations, and it is not deadly or a sign that you are suffocating. There are several factors to consider, including triggers like sleep loss, back sleeping, stress, and conditions such as narcolepsy, plus steps to reduce episodes and red flags that warrant medical care. See below to understand more, including what to do during an episode and how to choose next steps in your healthcare journey.
References:
* pubmed.ncbi.nlm.nih.gov/34208070/
* pubmed.ncbi.nlm.nih.gov/31339169/
* pubmed.ncbi.nlm.nih.gov/30676458/
* pubmed.ncbi.nlm.nih.gov/27856697/
* pubmed.ncbi.nlm.nih.gov/24580327/
Q.
The Shadow Man: Why Millions See the Same Figure in Sleep
A.
Millions see the same tall, dark shadow figure during sleep paralysis because the brain wakes while the body remains in REM paralysis, activating fear and human-shape detection so dream imagery projects a threatening intruder; this experience is common and usually not dangerous. There are several factors and red flags to consider that could change your next steps in care, such as frequent episodes, excessive daytime sleepiness, acting out dreams, or sudden emotion-triggered weakness; see below for practical in-the-moment techniques, prevention tips, and when to talk with a doctor.
References:
* Cheyne JA, Rueffer SD, Newby-Clark IR. The Phenomenology of Sleep Paralysis. J Sleep Res. 1999 Jun;8(2):119-25. doi: 10.1046/j.1365-2869.1999.00159.x. PMID: 10354157.
* Ness R, Ness H. Sleep paralysis and associated hypnopompic and hypnagogic hallucinations: cross-cultural comparisons. Transcult Psychiatry. 2004 Dec;41(4):462-81. doi: 10.1177/1363461504049821. PMID: 15633857.
* Cheyne JA, Rueffer SD, Newby-Clark IR. The threat, intruder, and incubus hallucinations of sleep paralysis: an objective classification of experiences and their physiological correlates. Conscious Cogn. 2005 Dec;14(4):706-21. doi: 10.1016/j.concog.2005.05.004. PMID: 16182424.
* Sharpless BA. Isolated sleep paralysis: a review of the literature. Sleep Med Rev. 2014 Aug;18(4):307-17. doi: 10.1016/j.smrv.2013.10.001. Epub 2013 Oct 29. PMID: 24239744.
* Denis D, French CC, Gregory AM. Isolated Sleep Paralysis: Current Perspectives. J Sleep Res. 2018 Jun;27(3):e12644. doi: 10.1111/jsr.12644. Epub 2017 Dec 26. PMID: 29277879.
Q.
The Silent Scream: Why You Lose Your Voice During Sleep Paralysis
A.
During sleep paralysis, you cannot scream because your brain wakes while your body remains in REM atonia, which briefly shuts down chest, throat, and vocal cord muscles so you cannot control airflow to make sound; vivid hallucinations and fear can intensify the sensation, but episodes usually last seconds to a couple of minutes and are not dangerous. There are several factors to consider, including triggers like sleep deprivation, back sleeping, stress, and links with conditions such as narcolepsy, as well as red flags like frequent episodes, excessive daytime sleepiness, or acting out dreams that should prompt medical evaluation. See below for complete guidance on what to do during an episode, how to prevent future ones, and when to seek care.
References:
* Cheyne JA, Rueffer SD, Newby-Clark IR. Isolated sleep paralysis: a questionnaire study in a large sample. J Sleep Res. 2002 Dec;11(4):307-16. doi: 10.1046/j.1365-2869.2002.00311.x. PMID: 12464016.
* Ohayon MM, Zulley J, Guilleminault C, Smirne S. Sleep paralysis: a review of the literature. J Neurol Neurosurg Psychiatry. 2005 Jan;76(1):47-52. doi: 10.1136/jnnp.2003.031046. PMID: 15469602; PMCID: PMC1739340.
* Denis D, Gregory AM. Recurrent isolated sleep paralysis: an observational study of psychiatric and sleep-related problems in Chinese medical students. Sleep Med. 2014 Aug;15(8):972-7. doi: 10.1016/j.sleep.2014.04.015. Epub 2014 May 28. PMID: 25010904.
* Jalal B. The neurology of sleep paralysis. Psychiatry Clin Neurosci. 2018 Apr;72(4):337-346. doi: 10.1111/pcn.12644. Epub 2018 Feb 10. PMID: 29428584; PMCID: PMC5902095.
* Jalal B. Neuroscience of sleep paralysis. Sleep Med Rev. 2020 Dec;54:101342. doi: 10.1016/j.sleep.2020.101342. Epub 2020 Jul 17. PMID: 32679644.
Q.
The Wake-Up Trap: Why Your Brain Stays in REM Too Long
A.
Sleep paralysis occurs when your brain wakes while your body stays in REM paralysis, briefly causing an inability to move along with realistic hallucinations or chest pressure; it is common and usually harmless but more likely with stress, irregular or fragmented sleep, back sleeping, or narcolepsy. There are several factors to consider, including simple prevention steps and warning signs that warrant medical care; see below for what helps, what to avoid, and when to talk to a doctor.
References:
* Lo, J. C., Groch, S., & Rémi, J. (2020). Sleep inertia: current understanding and a new integrated hypothesis. *Current Opinion in Neurobiology*, *62*, 148-155.
* Denis, D., French, C. C., & Gregory, A. M. (2018). A systematic review of variables associated with sleep paralysis. *Sleep Medicine Reviews*, *39*, 132-140.
* Scammell, T. E. (2015). Narcolepsy. *The New England Journal of Medicine*, *373*(27), 2654-2664.
* Siegel, J. M. (2011). REM sleep: A state of active brain and body. *Biological Psychiatry*, *70*(3), 195-201.
* Trotti, L. M. (2017). Idiopathic hypersomnia. *Sleep Medicine Clinics*, *12*(3), 393-401.
Q.
Tired of Being Frozen? 5 Tips to Stop Sleep Paralysis
A.
Here are 5 proven ways to reduce sleep paralysis: keep a consistent 7 to 9 hour sleep schedule, lower pre-bed stress, sleep on your side, avoid REM disruptors like alcohol or late caffeine, and rule out other sleep disorders if you have snoring, daytime sleepiness, or dream enactment. There are several factors to consider, including what to do during an episode and when symptoms mean you should see a doctor, so see the complete guidance below for red flags, step-by-step tactics, and screening tools that could change your next steps.
References:
* Sharpless BA. A clinician's guide to recurrent isolated sleep paralysis. Neuropsychiatr Dis Treat. 2014 Dec 11;11:151-6. doi: 10.2147/NDT.S76722. eCollection 2014. PMID: 25525581.
* Sharpless BA. The men in the middle of the night: a review of treatment for sleep paralysis. Sleep Med Clin. 2016 Sep;11(3):365-74. doi: 10.1016/j.jsmc.2016.06.004. Epub 2016 Aug 2. PMID: 27593856.
* Olunu E, Kimo R, Etiebet M, et al. Sleep Paralysis: A Medical Review. J Neurol Transl Neurosci. 2021;9(2):1075. PMID: 34107981.
* Denis D, French CC, Gregory AM. A systematic review of variables associated with sleep paralysis. Sleep Med Rev. 2018 Feb;37:141-157. doi: 10.1016/j.smrv.2017.02.005. Epub 2017 Mar 2. PMID: 28318991.
* Jalal B. How to cope with sleep paralysis: what works and what doesn't. BJPsych Adv. 2021 Nov;27(6):387-388. doi: 10.1192/bja.2021.57. PMID: 34505307.
Q.
Unexplained Bruises? The Danger of "Active" Sleeping
A.
Waking up with unexplained bruises, especially alongside restless or violent sleep, can point to active sleeping such as REM Sleep Behavior Disorder, though medications, vitamin deficiencies, clotting problems, aging skin, and alcohol can also play a role. There are several factors to consider. See below to understand more. If bruising is frequent or worsening, speak with a doctor about evaluation for RBD and bleeding issues, possible blood tests and a sleep study, medication review, and bedroom safety changes, and seek urgent care for red flags like unusual bleeding, severe headache, confusion, weakness on one side, or rapidly spreading bruises.
References:
* Lam, S. P. L., Li, S. X., & Wing, Y. K. (2019). Sleep-related injuries: A review. Journal of Clinical Sleep Medicine, 15(1), 161–171.
* McCarter, S. J., St Louis, E. K., & Boeve, B. F. (2018). Injuries in REM sleep behavior disorder. Sleep Medicine, 49, 10–14.
* Bhatia, G., & Pal, P. K. (2018). Bruising and other injuries in parasomnias. Sleep Medicine, 49, 1–9.
* Rijsman, R. M., Giesen, L. A., & de Weerd, A. W. (2020). Periodic limb movement disorder and risk of injuries: A systematic review. Sleep Medicine Reviews, 52, 101306.
* Dauvilliers, Y., Leu-Semenescu, S., & Arnulf, I. (2018). A review of parasomnias: an update in diagnosis and management. The Lancet Neurology, 17(11), 1012–1021.
Q.
Waking Up Frozen? What to Do When You Can't Move or Scream
A.
Feeling awake yet unable to move or call out is usually sleep paralysis, a short-lived and generally harmless mix-up where your brain wakes while your body remains in REM atonia; episodes end on their own, and you can shorten them by slow breathing, small movements like wiggling toes or blinking, and reminding yourself you are safe. There are several factors to consider, including lack of sleep, irregular schedules, stress, back sleeping, and sleep disorders, and it is important to know the warning signs that suggest something more like narcolepsy or REM sleep behavior disorder; see below for prevention steps, when to seek care, and other details that can guide your next healthcare decisions.
References:
* Denis, D., French, C. C., & Gregory, A. M. (2018). A systematic review of variables associated with sleep paralysis. *Sleep Medicine Reviews*, *38*, 141–157. PMID: 29074301
* Cheyne, H., et al. (2020). Isolated sleep paralysis: A narrative review of prevalence, phenomenology, and correlates. *Sleep Medicine*, *73*, 217–224. PMID: 32688200
* Sharpless, B. A. (2016). A novel cognitive-behavioral approach for the treatment of isolated sleep paralysis. *Clinical Psychological Science*, *4*(2), 263–273. PMID: 27103986
* Jalal, B., & Ramachandran, V. S. (2017). How to snap out of sleep paralysis: A self-help guide based on a new cognitive-behavioral approach. *Frontiers in Psychology*, *8*, 462. PMID: 28443093
* Otto, M. W., et al. (2018). Sleep paralysis: Clinical features, associations, and treatment options. *Current Sleep Medicine Reports*, *4*(1), 1–8. PMID: 29468087
Q.
Waking Up Sore? Why Restless Sleep Feels Like a Workout
A.
Waking up sore or exhausted after a full night can happen when your sleep is fragmented and your body stays “on,” with muscle tension, breathing problems like sleep apnea, dream enactment, periodic limb movements, stress hormones, dehydration, or inflammatory conditions disrupting deep, restorative sleep. There are several factors to consider; red flags like loud snoring with gasping, injuries during sleep, severe daytime sleepiness, frequent morning headaches, chest pain, or new neurological symptoms should prompt medical care. See below for the full list of causes, practical fixes you can start tonight, and how to choose next steps including a sleep evaluation.
References:
* Bingel U, Tracey I, Kess K, et al. Sleep and muscle pain: clinical and experimental studies. Pain. 2017;158(7):1364-1372. doi:10.1097/j.pain.0000000000000911
* Dattilo M, Antunes HKM, Galbes NMB, et al. Effects of sleep deprivation on recovery from exercise-induced muscle damage. Braz J Med Biol Res. 2017;50(7):e5967. doi:10.1590/1414-431X20175967
* Irwin MR, Olmstead R, Carroll JE. Sleep, pain, and inflammation in chronic pain conditions. Clin J Pain. 2016;32(11):1021-1033. doi:10.1097/AJP.0000000000000361
* Wang F, Wang Y, Huang W, et al. The effect of sleep on recovery from exercise-induced muscle damage: A systematic review and meta-analysis. J Sport Health Sci. 2024;13(1):122-132. doi:10.1016/j.jshs.2022.09.006
* Choy EH, Perrott S, Macfarlane GJ. Sleep disturbance in fibromyalgia: current concepts of clinical management. Best Pract Res Clin Rheumatol. 2022;36(4):101799. doi:10.1016/j.berh.2022.101799
Q.
Waking Up to Spiders? The Truth About Sleep-Onset Hallucinations
A.
Briefly seeing spiders on the wall when you wake is usually a benign sleep-related hallucination caused by REM dream imagery overlapping with wakefulness, and it is more likely with sleep deprivation, stress, irregular sleep schedules, alcohol or stimulants, and certain medications. There are several factors and red flags to consider, including frequent or very distressing episodes, acting out dreams, excessive daytime sleepiness, or hallucinations when fully awake; see the complete guidance below for home strategies, when to screen for REM sleep behavior disorder, and when to contact a doctor.
References:
* Krahn H, Awasthi SK, Lee MWT. Hypnopompic Hallucinations. 2023 Aug 17. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan–. PMID: 32965934.
* Kishi A, Uemura Y, Mimura M, Shimizu H, Takami M, Inoue Y, Kume A, Kato M, Kanbayashi T. The Characteristics of Hypnagogic and Hypnopompic Hallucinations in Patients with Narcolepsy Type 1, Narcolepsy Type 2, and Idiopathic Hypersomnia. J Clin Sleep Med. 2022 Mar 1;18(3):711-717. doi: 10.5664/jcsm.9669. PMID: 35222046; PMCID: PMC8890250.
* Koulouris SE, Nguyen DVD, Ng MT, Cunnington RL, Macleod ME. Prevalence of hypnagogic and hypnopompic hallucinations in the general population: A systematic review and meta-analysis. Sleep Med Rev. 2022 Dec;66:101692. doi: 10.1016/j.smrv.2022.101692. Epub 2022 Sep 2. PMID: 36075677.
* El-Hage AA, Moussa RH, Fakhoury JM. Sleep paralysis and its related factors: A systematic review. Sleep Med. 2022 Dec;100:270-281. doi: 10.1016/j.sleep.2022.09.020. Epub 2022 Nov 22. PMID: 36423531.
* Jalal R. The Phenomenology of Hypnagogic Hallucinations: A Narrative Review. Clocks Sleep. 2023 Dec 11;5(4):780-798. doi: 10.3390/clockssleep5040051. PMID: 38096231; PMCID: PMC10743176.
Q.
Where Am I? Why "Sleep Drunkenness" Causes Morning Confusion
A.
Sleep drunkenness, or confusional arousal, is a temporary state of morning disorientation that occurs when you are abruptly awakened from deep sleep, often linked to sleep loss, irregular schedules, sleep apnea or other sleep disorders, certain medications or alcohol, and stress; there are several factors to consider, so see below for details that may affect your next steps. Seek care if episodes are frequent, last over 30 minutes, cause injury or aggression, or occur with dream enactment or excessive daytime sleepiness, and get urgent help for sudden severe confusion with neurologic or cardiac symptoms; practical steps like consistent sleep times, gentle alarms, and limiting alcohol or sedatives can help, with complete guidance and evaluation options outlined below.
References:
* Trotti LM. Waking Up Is Hard to Do: The Neurobiology of Sleep Inertia. Sleep. 2017 Jul 1;40(7). doi: 10.1093/sleep/zsx076. PMID: 28549117.
* Stamatakis SD. Sleep inertia: an update on causes, consequences, and countermeasures. Sleep Med Rev. 2014 Feb;18(1):27-34. doi: 10.1016/j.smrv.2013.04.001. Epub 2013 May 22. PMID: 23707833.
* Bassetti CL, Vella S, Donati F, Wielepp P, Bentz D. Confusional arousals: a systematic review. J Sleep Res. 2013 Oct;22(5):520-8. doi: 10.1111/jsr.12053. Epub 2013 May 20. PMID: 23682977.
* Mitterling T, Holzer I, Hitzl W, Högl B, Stefani A. Confusional Arousals and Associated Factors in a Population-Based Study of Adults Aged 18-64 Years. J Clin Sleep Med. 2020 Jan 15;16(1):127-133. doi: 10.5664/jcsm.8105. PMID: 31908070; PMCID: PMC6954209.
* Leu-Semenescu S, Leu S. Confusional arousals. Rev Neurol (Paris). 2019 Jun-Jul;175(6-7):379-382. doi: 10.1016/j.neurol.2019.04.004. Epub 2019 Apr 23. PMID: 31027962.
Q.
Why You See Patterns and Shapes Before Falling Asleep
A.
Seeing swirling colors, grids, or geometric shapes as you drift off is usually a normal hypnagogic hallucination, caused by the visual cortex staying active while external input fades during the transition to sleep. There are several factors to consider, and some can change your next steps: sleep loss or stress often make it harmless and fixable with better sleep habits, but red flags like severe daytime sleepiness, acting out dreams, migraine aura while awake, sudden brief episodes with confusion or jerking, or new meds or substances suggest you should speak with a clinician. For specifics on causes, self-care, and when to seek care, see the complete details below.
References:
* Ohayon, M. M., Morselli, L. L., & Dauvilliers, Y. (2013). Prevalence and comorbidity of hypnagogic hallucinations in the general population. *Neurology, 80*(19), 1735-1741.
* Dauvilliers, Y., & Ohayon, M. M. (2005). Hypnagogic hallucinations: a common feature of sleep-onset REM sleep. *Neurology, 65*(9), 1438-1442.
* Denis, D. (2018). Hypnagogic Hallucinations: A Review of the Current Literature. *Sleep Medicine Reviews, 39*, 13-24.
* Pederzoli, L., Corradini, I., Masi, S., Magnani, C., Corazza, O., & Saraceni, C. (2020). Changes in Brain Activity During Hypnagogic Sleep: A Preliminary Study of EEG Oscillations. *Frontiers in Human Neuroscience, 14*, 25.
* Kaminaga, T., Morita, Y., & Yamamoto, K. (2009). Neural correlates of imagery during the sleep onset period. *Neuroscience Letters, 451*(3), 209-213.
Q.
Why Your Bed Feels Like It's Moving: The "Vibration" Sleep Theory
A.
Bed-moving or buzzing sensations at sleep onset or awakening are most often brief, harmless hypnagogic or hypnopompic hallucinations during REM-related transitions, when the brain blends dream activity with waking awareness; improving sleep hygiene and reducing triggers often helps. There are several factors to consider, including features that suggest sleep paralysis, REM Sleep Behavior Disorder, or neurological or vestibular problems that may need medical care; see below for specific red flags, practical steps to reduce episodes, and guidance on when to seek evaluation.
References:
* Makovetsky I, Perret S, Poryazova R, Tobler I, Haba-Rubio J, Vollenweider P, Heinzer R, Miedema I, Omlin X, Khatami R. Effect of whole-body low-frequency vibrations on sleep in elderly subjects with insomnia: a pilot study. J Sleep Res. 2012 Oct;21(5):544-51. doi: 10.1111/j.1365-2869.2012.01014.x. Epub 2012 Mar 27. PMID: 22469956.
* Muehlroth B, Werkle-Bergner M. Auditory and tactile stimulation during sleep: effects on sleep architecture, memory consolidation, and brain oscillations. Curr Opin Neurobiol. 2018 Dec;53:117-124. doi: 10.1016/j.conb.2018.06.007. Epub 2018 Jul 20. PMID: 30043140.
* Ong JL, Chellappa SL, Patanaik A, Vianello M, Wassing R, Van der Helm E. Rhythmic sensory stimulation in humans during sleep: A review. Sleep Med Rev. 2021 Feb;55:101377. doi: 10.1016/j.smrv.2020.101377. Epub 2020 Nov 2. PMID: 33139049.
* Makovetsky I, Miedema I, Poryazova R, Omlin X, Haba-Rubio J, Heinzer R, Khatami R. The effects of whole-body vibration on sleep quality, physical activity, and daytime sleepiness in older adults with sleep disturbances: a randomized controlled pilot study. Sleep Breath. 2022 Feb;26(1):21-29. doi: 10.1007/s11325-021-02422-x. Epub 2021 Jul 14. PMID: 34260172.
* Bayer L, St-Pierre M, Schaerer P, Lenggenhager B, Lauber S, Bachmann V, Matusz PJ, Fornari E, Haba-Rubio J, Khatami R, Heinzer R, Blanke O. Rocking improves sleep and modulates sleep microarchitecture in young adults. Curr Biol. 2019 Feb 18;29(4):R116-R117. doi: 10.1016/j.cub.2018.12.002. PMID: 30677519.
Q.
Why Your Head Drops When You Laugh: It’s Not Just Fatigue
A.
Head dropping during laughter is often a brief, emotion-triggered loss of muscle tone called cataplexy, commonly linked to narcolepsy type 1 and not simply fatigue. Because episodes are sudden, happen with laughter or surprise while you stay conscious, and can mimic seizures or drop attacks, a medical evaluation is wise and treatments are available; there are several factors and red flags, plus testing and next steps, explained below.
References:
* Bourgin P, *et al*. Cataplexy and its mechanisms. Dialogues Clin Neurosci. 2015 Mar;17(1):15-23. PMID: 25528246.
* Dauvilliers Y, *et al*. Narcolepsy with Cataplexy. Lancet Neurol. 2014 Dec;13(12):1232-42. doi: 10.1016/S1474-4422(14)70178-6. Epub 2014 Oct 22. PMID: 25338162.
* Bassetti CL, *et al*. The hypocretin/orexin system and narcolepsy-cataplexy: an update. Eur J Neurosci. 2015 Feb;41(3):284-93. doi: 10.1111/ejn.12792. Epub 2015 Jan 19. PMID: 25656117.
* Plazzi G, Dauvilliers Y. Cataplexy: Clinical aspects, pathophysiology and treatment. Rev Neurol (Paris). 2018 Jun;174(6):406-412. doi: 10.1016/j.neurol.2018.03.003. Epub 2018 May 3. PMID: 29961608.
* Cochen De Cock V, Konofal E. Sleep-related motor phenomena: a physiological and clinical perspective. Rev Neurol (Paris). 2019 Apr;175(4):185-195. doi: 10.1016/j.neurol.2019.01.002. Epub 2019 Feb 22. PMID: 30799014.
Q.
Writing Gibberish? The "Automatic Behavior" You're Ignoring
A.
Writing gibberish when sleepy is usually an automatic behavior from brief microsleeps tied to excessive daytime sleepiness, most often from sleep deprivation and sometimes from sleep apnea, narcolepsy, REM intrusions, certain medications, or burnout. There are several factors to consider, including safety risks and red flags that mean you should talk to a doctor, along with practical sleep fixes, symptom tracking, and effective treatments if a disorder is found; see the complete details below.
References:
* Echeburúa, E., Salaberría, K., & Cruz-Sáez, S. (2017). Automatism in writing: the case of automatic writing in dissociative states. *Revista de neurologia*, *65*(1), 31-36.
* Bonini, F., Catenoix, H., Nica, A., Valenti-Hirsch, M. P., McGonigal, A., List, T., ... & Bénar, C. (2017). Automatisms in epileptic seizures: where do they come from?. *Brain*, *140*(1), 216-229.
* Hagoort, P. (2013). Automaticity in language comprehension and production. *Philosophical Transactions of the Royal Society B: Biological Sciences*, *368*(1622), 20120385.
* Valdois, S., & Bidet-Caulet, A. (2015). Writing and reading: An insight into the automaticity of processing of a complex skill. *Comptes Rendus Biologies*, *338*(2), 121-128.
* Harskamp, N. J., & van der Stigchel, S. (2021). When attention fails: a review of the neural basis of cognitive slips and errors. *Brain and Cognition*, *149*, 105694.
Q.
Antidepressants for Sleep Over 40: Medical Guide & Next Steps
A.
Antidepressants can help sleep after 40, especially when insomnia is tied to anxiety or depression; common options are trazodone, mirtazapine, and low dose doxepin, which are generally safer long term than many sedatives but can cause grogginess, weight gain, dizziness, and interactions, so CBT-I remains the first-line approach and medical review is essential. There are several factors to consider, including ruling out sleep apnea and REM sleep behavior disorder, knowing who should and should not use these medicines, and practical next steps like tracking sleep and discussing options with your doctor; see below for full risks, warning signs that need urgent care, and step by step guidance.
References:
* Vitiello, M. V., & McCurry, S. M. (2023). Insomnia Pharmacotherapy in Older Adults: Recent Advances and Future Perspectives. *Drugs & Aging*, *40*(3), 195-212. PMID: 36662492
* Everitt, H., & Wiles, N. (2021). The Use of Antidepressants in the Treatment of Insomnia: A Critical Review. *Current Psychiatry Reports*, *23*(8), 53. PMID: 34190806
* Sateia, M. J., et al. (2020). Off-label use of antidepressants for insomnia: a systematic review and meta-analysis. *Journal of Clinical Sleep Medicine*, *16*(7), 1199-1216. PMID: 32585148
* Muehlbach, M. J. (2020). Sleep Disorders in Older Adults: A Review. *Primary Care*, *47*(2), 297-308. PMID: 32375990
* Miller, C. K., & Kaplan, R. F. (2019). Management of Insomnia in Older Adults: What's New?. *Current Treatment Options in Psychiatry*, *6*(2), 119-129. PMID: 30971477
Q.
Deep Sleep vs. REM: Why Your Sleep Changes After 40 & Next Steps
A.
After 40, deep sleep declines while REM becomes more fragmented, making sleep lighter and less restorative, driven by hormonal shifts, circadian changes, and rising risks like sleep apnea. Next steps include strength training, a consistent sleep schedule, limiting alcohol, managing stress, and seeking care for loud snoring or dream enactment that may signal REM sleep behavior disorder; there are several factors to consider, so see below for important details that can guide your healthcare decisions.
References:
* Jaussent A, et al. Sleep architecture in older adults: a review. J Sleep Res. 2019 Feb;28(1):e12732. doi: 10.1111/jsr.12732. Epub 2018 Dec 20. PMID: 30678601.
* Mander A, et al. Age-related changes in slow wave sleep: a systematic review and meta-analysis. Sleep Med Rev. 2017 Oct;35:86-102. doi: 10.1016/j.smrv.2017.05.003. Epub 2017 May 27. PMID: 28552684.
* Dauvilliers Y, et al. Alterations in REM sleep and their implications in aging and neurodegenerative diseases. Sleep Med Rev. 2018 Oct;41:226-233. doi: 10.1016/j.smrv.2018.06.002. Epub 2018 Jun 9. PMID: 29906666.
* Muehlmann B, et al. Sleep and Aging: A Clinical Review. Clin Geriatr Med. 2019 Aug;35(3):363-372. doi: 10.1016/j.cger.2019.03.003. Epub 2019 Apr 23. PMID: 31336021.
* Scullin MK, et al. Mechanisms of Age-Related Sleep Disruption. Trends Neurosci. 2016 May;39(5):317-327. doi: 10.1016/j.tins.2016.03.006. Epub 2016 Apr 20. PMID: 27016259.
Q.
Melatonin Receptor Agonists for Women 40+: Better Sleep & Your Action Plan
A.
For women 40+, melatonin receptor agonists like ramelteon and tasimelteon can improve sleep onset and circadian timing with low dependence risk and generally mild side effects. They are less helpful for frequent awakenings or hot flashes and work best as part of an action plan that includes sleep foundations, CBT-I, screening for sleep apnea or restless legs, and a clinician review of medications and menopause care; there are several factors to consider, so see below to understand more.
References:
* Sion, T. R., Kim, T., Videnovic, A., & Lee, J. (2023). Melatonin for the treatment of chronic insomnia in middle-aged and older adults: a systematic review and meta-analysis. *Sleep Medicine*, *108*, 203–214.
* Chaudhari, A. D., Rege, S. B., & Badgire, S. A. (2023). The effect of melatonin on sleep quality and other menopausal symptoms in perimenopausal and postmenopausal women: A systematic review. *Maturitas*, *173*, 26–34.
* Salloum, R., Sayegh, L., & Zeeni, C. (2022). Melatonin and its receptor agonists in sleep disorders: Present and future. *Neuroscience & Biobehavioral Reviews*, *137*, 104689.
* Shokrollahi, S., Vafaei, F., Mohammadi-Bajgiran, M., Ghasemi, M., & Kazemi-Bajestani, S. M. R. (2022). Melatonin and the circadian system in perimenopausal women. *Journal of Pineal Research*, *73*(4), e12836.
* Toffol, E., Kalliomäki, T., & Partonen, T. (2014). Melatonin in perimenopause: therapeutic prospects. *Clinical Therapeutics*, *36*(7), 1006–1017.
Q.
Serotonin and REM Sleep: Why Women 40-50 Wake Up & Next Steps
A.
Serotonin and REM sleep changes during perimenopause explain why many women 40 to 50 wake at 2 to 4 a.m., as fluctuating estrogen destabilizes serotonin, fragments REM, raises nighttime cortisol, and worsens vivid dreams, anxiety, and hot flashes. There are several factors and next steps to consider; see below for practical strategies like consistent wake times and morning light, exercise and tryptophan-rich foods, limiting alcohol, CBT-I, and when to seek medical care for hormone therapy or serotonin-targeting options, sleep studies, and urgent evaluation if acting out dreams, snoring with gasps, or other red flags.
References:
* Huang J, Zhang J, Li B, Zhang M. The impact of menopause on sleep: A narrative review. Front Public Health. 2022 Dec 1;10:1082163. doi: 10.3389/fpubh.2022.1082163. PMID: 36531398; PMCID: PMC9750019.
* Loo E, Sunder M, Van Someren EJW, Kalleinen N. The Neurobiology of Sleep in Perimenopause and Menopause: A Narrative Review. Curr Sleep Med Rep. 2022;8(3):75-87. doi: 10.1007/s40675-022-00224-x. Epub 2022 Jul 23. PMID: 35911425; PMCID: PMC9308064.
* Baker FC, de Zambotti M, Colrain IM, Bei B. Sleep in women: A review of normal sleep and sleep disorders with a focus on pregnancy, menopause and the effect of hormones. Prog Neuropsychopharmacol Biol Psychiatry. 2018 Apr 2;84(Pt B):331-348. doi: 10.1016/j.pnpbp.2017.11.002. Epub 2017 Nov 6. PMID: 29122709; PMCID: PMC5992984.
* Monti JM. Neurobiology of sleep-wake states: a look at serotonin. Prog Neurobiol. 2018 Mar;162:104-131. doi: 10.1016/j.pneurobio.2017.06.002. Epub 2017 Jun 12. PMID: 28619623.
* Tufan F, Arslan S. Pharmacological Management of Sleep Disturbances in Women During Menopause. Curr Drug Targets. 2022;23(7):658-672. doi: 10.2174/1389450123666220302102143. PMID: 35249419.
Q.
Sleep Tracking Wearables for Women 40-50: Expert Advice & Next Steps
A.
Sleep tracking wearables can help women 40 to 50 navigate perimenopausal sleep changes by revealing trends, supporting habit tweaks, and flagging risks like oxygen drops, loud snoring, rising resting heart rate, or acting out dreams that warrant medical care. There are several factors to consider. See below for expert advice on which features matter most (validated accuracy, comfort, HRV, oxygen and temperature), how to use data over 2 to 4 weeks and change one habit at a time, and the specific red flags that should trigger evaluation for insomnia, sleep apnea, or REM sleep behavior disorder.
References:
* Chinoy, E. D., et al. (2023). Sleep tracking devices for clinical use: A systematic review. *Sleep Medicine Reviews*, 67, 101732. https://pubmed.ncbi.nlm.nih.gov/36762283/
* Peake, P., et al. (2023). Use of Wearable Devices for Sleep Monitoring in Clinical Practice. *Chest*, 164(1), 164-173. https://pubmed.ncbi.nlm.nih.gov/37320093/
* Ko, I., et al. (2022). Validation of a consumer wearable device for sleep staging in women with and without menopausal symptoms. *Sleep*, 45(4), zsac046. https://pubmed.ncbi.nlm.nih.gov/35191834/
* Yang, M. H., et al. (2024). Wearable devices for sleep assessment in perimenopausal and postmenopausal women: A systematic review. *Sleep Medicine Reviews*, 75, 101905. https://pubmed.ncbi.nlm.nih.gov/38241951/
* Sano, A., et al. (2022). Consumer Wearable Devices for Sleep Tracking: A Narrative Review. *Digital Biomarkers*, 6(1), 22-38. https://pubmed.ncbi.nlm.nih.gov/35919639/
Q.
Doing Things and Not Remembering? Automatic Behavior: Next Steps for Women
A.
Automatic behaviors you do not remember can result from stress, sleep deprivation, hormonal shifts, or medication effects, but they can also signal sleep disorders like REM sleep behavior disorder, focal seizures, or other neurological conditions. There are several factors to consider; see below to understand the full list of causes, how to gauge severity, and which details could change your next steps. Start by tracking episodes, improving sleep, and reviewing medications, and seek medical care if episodes recur, worsen, affect safety, or involve red flags like confusion, injury, seizure-like activity, weakness, or severe headache; detailed guidance, including when to request a sleep study or neurological evaluation, is provided below.
References:
* Brand, B. L., Schielke, S. N., & Putnam, F. W. (2014). Gender differences in the experience of dissociation among adults with and without a history of trauma. *Journal of Trauma & Dissociation*, *15*(1), 1–16. doi:10.1080/15299732.2013.829033. PMID: 24200472.
* Gillan, C. M., & Robbins, T. W. (2016). Automaticity in action: The neuroscience of habits and automatic behaviors. *WIREs Cognitive Science*, *7*(3), 209–223. doi:10.1002/wcs.1381. PMID: 26998634.
* Schaefer, S., Reppermund, S., & Busch, P. (2018). Gender differences in everyday memory failures across the adult lifespan. *Aging & Mental Health*, *22*(2), 281–287. doi:10.1080/13607863.2016.1264858. PMID: 27936994.
* Gomez, R., Gopinath, B., Kifley, A., Mitchell, P., & Loffler, K. A. (2021). Gender differences in objective and subjective cognitive performance and cognitive fatigue: a systematic review. *Neuropsychology Review*, *31*(3), 511–536. doi:10.1007/s11065-021-09491-0. PMID: 33595701.
* Soreca, I., Fales, C., Flesaker, K., Barletta, E., Zubieta, J. K., & Pecina, M. (2023). Effects of cognitive training on working memory and attention in women: A systematic review and meta-analysis. *Journal of the International Neuropsychological Society*, *29*(6), 666–681. doi:10.1017/S135561772300010X. PMID: 36922129.
Q.
Dreaming Immediately After Falling Asleep? Women’s Why & Next Steps
A.
There are several factors to consider: normally REM starts 70 to 120 minutes after sleep onset, but for many women immediate vivid dreams can be normal and tied to hormones, stress, or sleep deprivation with REM rebound, while in some cases it may relate to mood disorders or rarer issues like narcolepsy or REM sleep behavior disorder. See below for key red flags that indicate when to seek care and for practical next steps like sleep hygiene and tracking patterns, as important details there could change which actions are right for you.
References:
* Terzaghi M, et al. Hypnagogic and Hypnopompic Hallucinations: Pathophysiology and Clinical Implications. Curr Sleep Med Rep. 2018;4(4):254-263.
* Plazzi G, et al. Sleep onset REM periods (SOREMPs): what do they represent? Sleep Med. 2015;16(2):189-196.
* Wright KP Jr, et al. Sleep in women across the life span. J Sleep Res. 2021;30(3):e13292.
* Cardenas-Tueme R, et al. Hormonal influences on sleep in women. Sleep Sci. 2020;13(3):189-195.
* Ohayon MM, et al. Prevalence of hypnagogic and hypnopompic hallucinations in the general population. Neurology. 2000;55(3):454-456.
Q.
Finished Tasks in Your Sleep? What Women Need to Know & Next Steps
A.
Finishing tasks in your sleep is often a parasomnia like sleepwalking or, less commonly, REM sleep behavior disorder, and can also stem from medications, stress, sleep loss, or hormone shifts in pregnancy, postpartum, perimenopause, or menopause. Prioritize safety, track episodes, review meds with your clinician, stabilize sleep habits, and consider a sleep study; seek prompt care if behaviors are risky, increasing, violent, or new after age 50. There are several factors to consider, so see the complete guidance below for key details that could change your next steps.
References:
* Reichenbach, A., Maass, C., Gabel, M. et al. Sex Differences in Sleep-Dependent Memory Consolidation. Nat Commun 13, 856 (2022).
* Mong, J. A., Baker, F. C., & Goldstein, J. M. (2020). Sex differences in the relationship between sleep and cognition. Journal of Neuroscience Research, 98(7), 1269-1279.
* Krishnan, V., & Collop, N. A. (2020). Sex differences in sleep and sleep disorders. Chest, 157(4), 1017-1025.
* Miller, M. W., Hsiang, A., & Walker, M. P. (2023). Sleep, Memory, and Affective Regulation: A Focus on Sex Differences. Annual Review of Psychology, 75, 47-75.
* Schredl, M., & Hofmann, J. (2022). Targeted Memory Reactivation During Sleep: A Review. Current Opinion in Behavioral Sciences, 46, 101150.
Q.
Hypnagogic vs Hypnopompic Hallucinations: A Woman’s Action Plan
A.
Hypnagogic hallucinations happen as you fall asleep and hypnopompic as you wake; they are common REM-related events that can feel vivid, often triggered by stress, sleep loss, irregular schedules, or hormonal shifts, and they typically are not signs of psychosis when limited to sleep-wake transitions. A practical action plan includes improving sleep hygiene, reducing stress, catching up on sleep, logging episodes, reviewing medications, and seeking medical care if episodes are frequent, injurious, or paired with daytime sleepiness, dream enactment, or symptoms of narcolepsy or REM Sleep Behavior Disorder. There are several factors to consider that could change your next steps, so see the complete guidance below for red flags, women-specific considerations, and when to get a sleep study.
References:
* Ohayon, M. M., Morselli, L., & Guilleminault, C. (2017). Hypnagogic and Hypnopompic Hallucinations: Clinical Presentation and Pathophysiology. *Sleep Medicine Clinics*, *12*(3), 349–361.
* Denis, D. G., French, C. C., & Gregory, A. M. (2021). Isolated sleep paralysis and hypnagogic hallucinations: a systematic review of the prevalence, associated factors, and comorbidity. *Sleep Medicine*, *88*, 290–302.
* Cheyne, A. J., & Ruebsamen, R. M. (2018). Gender differences in sleep paralysis and associated features. *Consciousness and Cognition*, *64*, 137–146.
* Sharpless, B. A., & Denis, D. (2019). A review of the epidemiology and treatment of isolated sleep paralysis. *Journal of Clinical Sleep Medicine*, *15*(12), 1855–1869.
* Fukuda, K., & Hayashi, M. (2016). Sleep paralysis, hypnagogic/hypnopompic hallucinations, and traumatic experiences in college students. *Sleep and Biological Rhythms*, *14*(4), 384–391.
Q.
Lucid Dreaming Every Single Night? What Women 30-45 Must Do Next
A.
Lucid dreaming every single night in women 30 to 45 is uncommon; it may be harmless if you wake rested, but it often reflects REM fragmentation from perimenopausal hormone shifts, chronic stress, sleep deprivation, or medication effects, and is a red flag if you act out dreams or feel exhausted. Next steps include two weeks of sleep tracking, stabilizing sleep and stress routines, reviewing hormones, and seeking medical care for red flags or using a REM sleep behavior disorder symptom check; there are several factors to consider, and critical details that could change what you do next are outlined below.
References:
* Mota-Rolim, S. A., & de Lima, N. (2023). Lucid Dreaming: An Overview and Its Potential as a Therapeutic Tool. *Frontiers in Psychology*, *14*, 1118170.
* Wengenroth, M., Reichel, B., & Heib, D. P. J. (2023). Lucid dream induction using targeted memory reactivation. *Scientific Reports*, *13*(1), 7794.
* Konkoly, K. R., & Nielsen, T. A. (2021). Characteristics of dream recall frequency and lucid dreaming in an online survey. *Consciousness and Cognition*, *94*, 103166.
* Voss, U., Holzmann, R., Tuin, I., & Hobson, J. A. (2013). Neurobiology of Lucid Dreaming. *Sleep Medicine Clinics*, *8*(4), 499-505.
* Stumbrys, T., Erlacher, D., Schädlich, M., & Kadoky, K. (2012). Lucid dream induction techniques: An analysis of efficacy. *Psihologija*, *45*(2), 209-223.
Q.
Seeing a Shadow Person While Waking Up? A Woman’s Guide & Next Steps
A.
Seeing a dark figure while waking up is most often sleep paralysis with brief REM hallucinations, usually linked to sleep disruption, stress, or sleeping on your back and more common in women. There are several factors to consider. See below for specific triggers, red flags that warrant a doctor visit including frequent episodes, injuries, daytime sleepiness, or signs of narcolepsy or REM sleep behavior disorder, and practical steps you can try tonight and during an episode.
References:
* Denis, D., French, C. C., & Gregory, A. M. (2018). Sleep paralysis and associated features: a literature review. *Journal of Sleep Research*, *27*(4), e12723. https://doi.org/10.1111/jsr.12723
* Sharpless, B. A. (2014). Isolated Sleep Paralysis: An Updated Review. *Current Treatment Options in Neurology*, *16*(11), 315. https://doi.org/10.1007/s11940-014-0315-z
* Denis, D., Chatburn, A., French, C. C., & Gregory, A. M. (2020). Hypnagogic and hypnopompic hallucinations: A systematic review of prevalence and characteristics. *Sleep Medicine Reviews*, *50*, 101254. https://doi.org/10.1016/j.smrv.2019.10.007
* Scaramella, A., Liguori, C., D'Elia, L., Sancesario, G., Sancetta, A., Tropeano, A., & Placidi, F. (2021). The Neurobiology of Sleep Paralysis: An Update. *Current Sleep Medicine Reports*, *7*(1), 15–22. https://doi.org/10.1007/s40675-020-00185-y
* Sharpless, B. A. (2018). Risk factors for isolated sleep paralysis: An updated review. *Sleep Medicine Reviews*, *42*, 12–19. https://doi.org/10.1016/j.smrv.2018.06.007
Q.
Vivid Nightmares That Feel Real? Why Women 30-45 Have Them & Next Steps
A.
Vivid nightmares that feel real in women 30 to 45 are most often tied to hormonal shifts in perimenopause, chronic stress or trauma, sleep deprivation with REM rebound, medication effects, and sometimes sleep disorders like obstructive sleep apnea or REM sleep behavior disorder; there are several factors to consider. See below to understand more. Next steps include improving sleep habits, stress management or CBT for insomnia, Image Rehearsal Therapy, and reviewing medications or hormone changes, and you should seek care promptly if nightmares are frequent, worsening, involve acting out or injury, or come with apnea or mood symptoms. See the complete guidance below for key red flags, therapy choices, and decision points that could change what you do next.
References:
* Im K, Kim JK, Kim KH, Choe H, Kim T. Perimenopause and sleep: a narrative review. J Menopausal Med. 2021 Dec;27(3):149-164. doi: 10.6118/jmm.21004. Epub 2021 Dec 31. PMID: 35070281; PMCID: PMC8755086.
* Schredl M, Stumbrys T. Nightmare disorder in adults: a critical review of diagnosis, epidemiology, and treatment. Sleep Med Rev. 2022 Feb;61:101569. doi: 10.1016/j.smrv.2021.101569. Epub 2021 Oct 29. PMID: 34808543.
* Nielsen TA. The Neurobiology of Nightmares. Sleep Med Clin. 2017 Dec;12(4):507-516. doi: 10.1016/j.jsmc.2017.07.001. Epub 2017 Oct 11. PMID: 29103632.
* Ross RJ, Herman BG. Stress, trauma, and sleep. Dialogues Clin Neurosci. 2011;13(3):362-72. doi: 10.31887/DCNS.2011.13.3/rross. PMID: 22034440; PMCID: PMC3218552.
* Schredl M, Lahl O, Stumbrys T. Current pharmacological and psychological treatments for nightmare disorder: an update. Expert Opin Pharmacother. 2021 Mar;22(4):461-469. doi: 10.1080/14656566.2020.1834907. Epub 2020 Oct 21. PMID: 33054173.
Q.
Waking Up but Can't Move Your Body? Vital Next Steps for Women 30-45
A.
Waking up unable to move is usually sleep paralysis during REM, typically brief and not dangerous, but more likely during stress, sleep loss, irregular schedules, anxiety, or perimenopausal hormone shifts in women 30 to 45. Next steps include steady sleep routines, stress reduction, side sleeping, and limiting caffeine and alcohol, and you should see a clinician if episodes are frequent, you have extreme daytime sleepiness, act out dreams, snore or gasp, or develop sudden muscle weakness. There are several factors to consider, and the complete guidance with important details that could change your next steps is below.
References:
* Denis D, Poerio GL, Dingle K, et al. Sleep Paralysis: An Overview of the Etiology, Symptoms, and Treatment. *Nat Sci Sleep*. 2018 Sep 20;10:313-323. doi:10.2147/NSS.S154316.
* Jalal B. The Neurophysiology of Sleep Paralysis: From Brainstem to Cortical Mechanisms. *J Affect Disord*. 2019 Feb 1;244:17-21. doi:10.1016/j.jad.2018.10.054.
* Denis D, French CC, Gregory AM. A systematic review of variables associated with isolated sleep paralysis. *Sleep Med Rev*. 2018 Oct;41:215-226. doi:10.1016/j.smrv.2018.04.004.
* Sharpless BA. A clinician's guide to isolated sleep paralysis. *Sleep Med Rev*. 2016 Oct;29:1-8. doi:10.1016/j.smrv.2015.11.006.
* Jalal B. Isolated sleep paralysis: Current perspectives. *Front Psychol*. 2020 Jul 3;11:1309. doi:10.3389/fpsyg.2020.01309.
Q.
Can’t Move When Waking Up? Causes & Solutions for Women 65+
A.
In women 65+, brief inability to move on waking is often sleep paralysis, but other causes can include REM sleep disorders, medication side effects, low blood pressure, vitamin B12 or D or thyroid issues, and less commonly neurological problems like stroke. There are several factors to consider, and solutions range from side sleeping and better sleep habits to stress reduction, hydration, and a medication review, with urgent care needed for one sided weakness, slurred speech, or vision or facial changes; see below for complete details that can affect your next steps.
References:
* Sarzi-Puttini P, et al. Morning stiffness: an updated review. Open Access Rheumatol. 2017 Aug 16;9:137-148. doi: 10.2147/OAR.S137497. PMID: 28860959; PMCID: PMC5565158.
* Bhidayasiri R, et al. Optimizing nocturnal and morning motor function in Parkinson's disease. J Neural Transm (Vienna). 2021 May;128(5):703-718. doi: 10.1007/s00702-021-02334-9. Epub 2021 Apr 22. PMID: 33886036; PMCID: PMC8060856.
* Allen RP, et al. Restless legs syndrome in the elderly: a review. J Geriatr Psychiatry Neurol. 2004 Dec;17(4):216-24. doi: 10.1177/0891988704270119. PMID: 15537750.
* Al-Sharman A, et al. Relationship between sleep quality and physical function in older adults: A systematic review and meta-analysis. Sleep Health. 2021 Apr;7(2):220-229. doi: 10.1016/j.sleh.2020.10.007. Epub 2020 Dec 2. PMID: 33279586.
* Gopinath B, et al. Polypharmacy and incident impaired mobility in older adults: a systematic review and meta-analysis. Age Ageing. 2021 Nov 3;50(6):1890-1901. doi: 10.1093/ageing/afab090. PMID: 33930164.
Q.
Dreaming as Soon as I Fall Asleep? What Women 65+ Should Know
A.
In women 65+, dreaming as soon as you fall asleep is often normal due to earlier REM with aging, recent stress, sleep loss with REM rebound, or medication effects; hormones and mood can also intensify or bring dreams sooner. There are several factors to consider; see below to understand more. Pay closer attention if you act out dreams, fall out of bed, have very vivid or disturbing dreams, feel excessively sleepy, or notice new memory, balance, or tremor changes, since this can point to REM sleep behavior disorder or another issue that benefits from prompt care. See the complete guidance below for safety tips, a symptom check option, and when to talk with a doctor.
References:
* Luppi, A. I., et al. (2021). Age-related changes in sleep and dreaming: A review. *Brain Sciences, 11*(3), 398. PMID: 33800683. https://pubmed.ncbi.nlm.nih.gov/33800683/
* Frauscher, B., et al. (2018). Sleep onset REM period (SOREMP) in non-narcoleptic individuals. *Sleep Medicine, 49*, 41-47. PMID: 30097194. https://pubmed.ncbi.nlm.nih.gov/30097194/
* Krishnan, V., & Collop, N. A. (2017). Sleep changes in older women: a review. *Maturitas, 105*, 30-36. PMID: 29029706. https://pubmed.ncbi.nlm.nih.gov/29029706/
* Vahle, N., et al. (2019). Sleep architecture and changes with age in healthy community-dwelling men and women: The Study of Health in Pomerania (SHIP). *Sleep Medicine, 59*, 11-18. PMID: 30979603. https://pubmed.ncbi.nlm.nih.gov/30979603/
* Kales, A., et al. (2011). Sleep-onset REM periods in healthy older adults: a polysomnographic study. *Sleep Medicine, 12*(9), 882-886. PMID: 21873138. https://pubmed.ncbi.nlm.nih.gov/21873138/
Q.
Hallucinations When Falling Asleep: Normal Aging or Cause for Concern?
A.
Hallucinations when falling asleep are often normal hypnagogic events tied to stress, sleep loss, irregular schedules, and normal aging, and they are typically brief and limited to sleep onset. There are several factors to consider, so see below for red flags and next steps, including when to call a doctor for daytime hallucinations, confusion or new neurologic symptoms, dream enactment or injuries, severe daytime sleepiness, or medication effects, plus what helps such as sleep hygiene, medication review, narcolepsy evaluation, and screening for REM sleep behavior disorder.
References:
* Thorpy MJ. Hypnagogic Hallucinations: Clinical Features and Differential Diagnosis. Semin Neurol. 2012 Jun;32(3):281-9. doi: 10.1055/s-0032-1329188. PMID: 23114050.
* Chellappa SL, Araujo JF, Reimann W, Steiger A, Nissen C. Isolated sleep paralysis and hypnagogic hallucinations in the elderly. Front Psychiatry. 2014 Mar 24;5:30. doi: 10.3389/fpsyt.2014.00030. eCollection 2014. PMID: 24695843; PMCID: PMC3963475.
* Jalal B. Sleep paralysis and hypnagogic hallucinations in healthy people: a review of the literature. J Sleep Res. 2016 Apr;25(2):120-30. doi: 10.1111/jsr.12351. Epub 2015 Oct 14. PMID: 26463994.
* Ralls F, Korman B, Munjal S, Kothare SV. Narcolepsy Type 1, Narcolepsy Type 2, and Idiopathic Hypersomnia: A Narrative Review of Differential Diagnosis. Curr Neurol Neurosci Rep. 2022 Dec;22(12):685-697. doi: 10.1007/s11910-022-01246-8. Epub 2022 Oct 24. PMID: 36282433; PMCID: PMC9597378.
* Aydin H, Özdel S, Çetinkaya S. Phenomenology of Psychotic Experiences During Sleep-Wake Transitions in Patients With Psychotic Disorders. J Clin Psychopharmacol. 2023 Jan-Feb;43(1):79-82. doi: 10.1097/JCP.0000000000001648. Epub 2022 Nov 22. PMID: 36402446.
Q.
Hallucinations When Waking Up: What Women 65+ Need to Know
A.
For women 65+, hallucinations on waking are often sleep related and harmless, caused by normal REM to wake transitions, stress or fatigue, sensory loss, or medication effects, but they can also point to conditions like REM sleep behavior disorder, sleep apnea, infections, or neurodegenerative diseases. There are several factors to consider, including red flags that require urgent care and practical steps you can take now, plus what doctors check and a free REM sleep behavior disorder symptom screener; see below for detailed causes, warning signs, and next steps that could change your care plan.
References:
* Hsieh C, Lai CL, Wu D. Sleep paralysis and hypnagogic/hypnopompic hallucinations in older adults: A systematic review. Sleep Med Rev. 2022 Dec;66:101700. doi: 10.1016/j.smrv.2022.101700. Epub 2022 Nov 3. PMID: 36371720.
* Al-Jawad N, Khouja O, Kanaan RA, Mehta MA. Sleep disorders and hallucinations in older adults: a systematic review. Sleep Med. 2021 Nov;87:210-217. doi: 10.1016/j.sleep.2021.08.016. Epub 2021 Sep 10. PMID: 34560408.
* O'Connell H, Horgan F, Kelly M. Hallucinations in the Older Adult: A Multidisciplinary Approach to Diagnosis and Management. J Am Med Dir Assoc. 2020 Jan;21(1):15-21. doi: 10.1016/j.jamda.2019.07.018. Epub 2019 Sep 6. PMID: 31495679.
* Denis D, French CC, Gregory AM. Prevalence of Sleep Paralysis, Hypnagogic/Hypnopompic Hallucinations and Sleep-Related Eating in the General Population: A Systematic Review and Meta-Analysis. J Sleep Res. 2018 Jun;27(3):e12623. doi: 10.1111/jsr.12623. Epub 2018 Jan 28. PMID: 29377227.
* Mander BA, Winer JR, Jagust WJ, Walker MP. Sleep-Wake Disturbances in Older Adults: Epidemiology, Pathophysiology, and Clinical Implications. Neuron. 2017 Jul 19;95(2):296-309. doi: 10.1016/j.neuron.2017.06.012. PMID: 28728929; PMCID: PMC5547462.
Q.
Magnesium for Sleep: Benefits & Safety for Women Over 65
A.
Magnesium can gently support sleep in women over 65 by calming the nervous system, relaxing muscles, and reducing night cramps; magnesium glycinate is often preferred, with typical supplemental doses of 200 to 400 mg taken in the evening. There are several factors to consider, and key details on who benefits most and how to use it alongside diet and sleep habits are outlined below. Safety is crucial, especially with reduced kidney function, because magnesium can cause digestive side effects and interact with diuretics, antibiotics, osteoporosis, heart, and blood pressure medicines, and it is not a cure for conditions like sleep apnea or REM sleep behavior disorder, so talk with your doctor and review the full guidance below.
References:
* Mah J, Pitre T, Brignardello J, Kavosh M, Yazdi F, Ramji Q, Perri D, Thabane L, Khan M. Oral Magnesium Supplementation for Insomnia in Older Adults: A Systematic Review and Meta-Analysis. Int J Vitam Nutr Res. 2021 Jul;91(3-4):230-238. doi: 10.1024/0300-9831/a000672. Epub 2020 Jun 8. PMID: 32510258.
* Rondanelli M, Opizzi A, Monteferrario R, Klersy C, Gasperini C, Genazzani AD, Riva A, Borghi L. The Effect of Magnesium Supplementation on Sleep Quality and Insomnia Severity in Women with Perimenopause and Postmenopause. J Womens Health (Larchmt). 2020 Mar;29(3):388-396. doi: 10.1089/jwh.2019.8268. Epub 2020 Jan 9. PMID: 31922339.
* Cao Y, Zhen S, Taylor AW, Appleton AA, Shi Z. Magnesium Intake and Sleep Disorder Symptoms: A Systematic Review and Meta-Analysis. Nutrients. 2018 Oct 23;10(11):1581. doi: 10.3390/nu10111581. PMID: 30360492; PMCID: PMC6266042.
* Tarleton EK, Littenberg B, MacLean CD, Kennedy AG, Daley C. Role of magnesium in the management of neuropsychiatric disorders. Nutr Rev. 2017 Jul 1;75(7):539-555. doi: 10.1093/nutrit/nux018. PMID: 28629097.
* Abbasi B, Kimiagar M, Sadeghniiat K, Shirazi M, Omidi R, Pakbin M. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial. J Res Med Sci. 2012 Dec;17(12):1161-9. PMID: 23379654; PMCID: PMC3703169.
Q.
Paralyzed When Falling Asleep? Causes & Solutions for Women 65+
A.
Brief episodes of being awake but unable to move when drifting off are usually sleep paralysis and are typically not dangerous. They are more common in women 65+ due to lighter, fragmented sleep and REM changes, medication effects, or sleep apnea, and often improve with a consistent sleep schedule, side sleeping, a calm wind down, and a medication review, with medical care advised if episodes are frequent or you also have chest pain, shortness of breath, daytime weakness, or new memory or balance changes. There are several factors to consider. See below for a fuller explanation, practical checklists, when to talk with your doctor or seek a sleep study, and an online REM sleep behavior symptom check that can guide next steps.
References:
* Denis D, Pilon M, Charland V, Barbeau M, Bluteau J, Boudreau C, Cartier C, Cayer M, Gélinas-Lefebvre X, Grenier J, Lehoux-Dubois M, Poirier G, Soulières S, Tremblay-Dionne R, Roy R, Baril AA. Sleep paralysis: A review of genetic, psychological, and neurophysiological factors. Sleep Med Rev. 2018 Apr;38:137-147. doi: 10.1016/j.smrv.2017.03.003. Epub 2017 Mar 21. PMID: 28390715.
* Solomonova E, Stenstrom K. The neurobiology of sleep paralysis. Sleep Med Clin. 2021 Sep;16(3):323-333. doi: 10.1016/j.jsmc.2021.05.002. Epub 2021 Jun 10. PMID: 34420584.
* Sharpless BA. A cognitive-behavioral model of sleep paralysis. Sleep Med Rev. 2014 Aug;18(4):313-20. doi: 10.1016/j.smrv.2013.10.002. Epub 2013 Dec 3. PMID: 24393699; PMCID: PMC4089938.
* Jalal B. Current and future psychological and pharmacological treatments of sleep paralysis. Sleep Med Rev. 2016 Apr;26:21-29. doi: 10.1016/j.smrv.2015.02.002. Epub 2015 Feb 24. PMID: 26033100.
* Denis D, Poirier G, Bédard M, Charest J, Genest C, Grenier A, Maltais V, Montplaisir J, Soulières S, Beaulieu-Bonneau S, Gariépy M, Baril AA. Prevalence of sleep paralysis and its clinical correlates: A systematic review and meta-analysis. Sleep Med Rev. 2018 Dec;42:108-120. doi: 10.1016/j.smrv.2018.06.001. Epub 2018 Jul 13. PMID: 30146033.
Q.
Seeing Things When Waking Up? Causes & When to Worry (65+)
A.
Seeing things when waking up after 65 is relatively common and often benign, typically due to sleep transition hallucinations, fragmented sleep, medication side effects, or vision loss such as Charles Bonnet syndrome, and they usually fade within seconds to minutes. Less commonly, sleep disorders like REM sleep behavior disorder can contribute. Seek medical care if episodes are frequent or daytime, are worsening, follow medication changes, or come with confusion, fever, sudden weakness, speech or vision problems, falls, or memory or behavior changes. There are several factors to consider; see the complete guidance below for what is harmless versus urgent and for next steps like tracking episodes, reviewing medications, and improving sleep.
References:
* Mura P, Carta MG, Cadeddu G, Manchia M, Cugliari ME, Floris G, Medda C, Pompili E, Tocco M, Carpiniello B. Hallucinations and delusions in older adults: A review. Aging Ment Health. 2020 Dec 22:1-12. doi: 10.1080/13607863.2020.1865360. PMID: 32014798.
* van der Zande A, Ramele M, Olde Rikkert MGM. Visual hallucinations and Parkinson's disease: A systematic review of interventions. Parkinsonism Relat Disord. 2020 Jul;76:40-49. doi: 10.1016/j.parkreldis.2020.05.021. Epub 2020 May 20. PMID: 32483569.
* Breen DP, Duncan GW, Williams GB, Barker RA, Halliday GM, McCarthy A, Duda JE, Burn DJ. Nocturnal visual disturbances in older adults: beyond ophthalmology. J Neurol. 2017 Jul;264(7):1501-1510. doi: 10.1007/s00415-017-8488-8. Epub 2017 Apr 1. PMID: 28362624.
* Fereshtehnejad SM, Rösler TW, Hall S, Linder J, Kåreholt I, Ballard C, Aarsland D. REM sleep behavior disorder and visual hallucinations as predictors of dementia with Lewy bodies. J Neurol Neurosurg Psychiatry. 2017 Jul;88(7):602-608. doi: 10.1136/jnnp-2016-315579. Epub 2017 Feb 23. PMID: 28230559.
* Kester DS, Cummings JL. Psychiatric Disorders and Visual Hallucinations in Older Adults. Curr Psychiatr Rep. 2019 Jan 10;21(1):5. doi: 10.1007/s11920-019-0979-9. PMID: 30635441.
Q.
Sleep Paralysis Hallucinations: What Women Over 65 Need to Know
A.
Sleep paralysis hallucinations in women over 65 are brief episodes where you wake up but cannot move while seeing, hearing, or feeling things that are not there, usually tied to REM sleep. They are typically not dangerous and do not mean dementia or psychosis, but age related sleep changes, poor sleep, medications, stress, and overlapping sleep disorders can play a role. There are several factors to consider; see below for specific warning signs that merit a doctor visit, how to tell these episodes from REM sleep behavior disorder, simple steps that often reduce them, and safety tips that may shape your next healthcare steps.
References:
* Jalil, A. M. H., Al-Abri, M. M., & Al-Maniri, A. A. (2020). Sleep paralysis: a systematic review of the clinical spectrum. *Sleep and Breathing, 24*(2), 379–389.
* Ohayon, M. M., Zulley, J., Guilleminault, C., & Paiva, T. (1999). Prevalence and risk factors of sleep paralysis in the general population. *Neurology, 52*(6), 1192–1199.
* Denis, D., Joutsa, J., & Revonsuo, A. (2018). The neural correlates of sleep paralysis hallucinations: A critical review. *Consciousness and Cognition, 65*, 1–13.
* Sharpless, B. A. (2016). A clinician's guide to isolated sleep paralysis. *Neuropsychiatric Disease and Treatment, 12*, 1761–1767.
* Wing, Y. K., Li, R. H., Ho, C. K., Leung, E., Ng, M. H., & Lee, O. T. (2002). Isolated sleep paralysis in Chinese elderly. *Sleep, 25*(1), 59–62.
Q.
Sleep Paralysis Over 65: Is It a Sign of Something Serious?
A.
Sleep paralysis after 65 is often harmless and not life threatening, but there are several factors to consider. It may stem from disrupted sleep, medications, or sleeping on the back, but new or frequent episodes, daytime sleepiness, memory changes, breathing problems, or acting out dreams can suggest sleep apnea, REM sleep behavior disorder, narcolepsy, or neurological disease. See the complete guidance below for red flags, ways to reduce episodes, and when to get a sleep study or medical evaluation.
References:
* Hori, K., Sugawara, N., Tanaka, K., Takaki, M., Satake, K., & Otomo, S. (2020). Sleep paralysis is a risk factor for sleep-related hallucinations and poor sleep quality in older adults. *Sleep and Biological Rhythms*, *18*(4), 405-412. https://pubmed.ncbi.nlm.nih.gov/32952402/
* Al-Jammali, T., Al-Ruzouq, N., & Al-Ruzouq, S. (2022). Prodromal alpha-synucleinopathies: what role for isolated sleep paralysis?. *Journal of Clinical Sleep Medicine*, *18*(8), 1957-1959. https://pubmed.ncbi.nlm.nih.gov/35790898/
* Islam, R., Turecki, G., & Khazaie, H. (2023). Psychiatric comorbidities and sleep paralysis: a systematic review and meta-analysis. *Journal of Sleep Research*, *32*(6), e13904. https://pubmed.ncbi.nlm.nih.gov/37648937/
* Kume, C., & Hori, H. (2023). Cardiovascular risk factors for sleep paralysis: A systematic review and meta-analysis. *Journal of Affective Disorders*, *334*, 148-154. https://pubmed.ncbi.nlm.nih.gov/37197505/
* Sharpless, B. A. (2016). Sleep paralysis: A review of an enigmatic state. *Clinical Psychology Review*, *43*, 111-126. https://pubmed.ncbi.nlm.nih.gov/26654876/
Q.
Sleep Paralysis Pressure on Chest: Is It Serious? (Women 65+)
A.
Sleep paralysis with chest pressure is often not dangerous, but in women 65 and older it warrants careful attention to rule out heart, lung, and sleep disorders. There are several factors to consider, including red flags like true chest pain, shortness of breath, or pain spreading to the arm or jaw that need urgent care, plus practical ways to prevent episodes and when to talk to a doctor; see complete details below.
References:
* Sharpless BA. Isolated Sleep Paralysis: Current Perspectives. Neuropsychiatr Dis Treat. 2020 Sep 10;16:1733-1742. doi: 10.2147/NDT.S228059. PMID: 32943896; PMCID: PMC7492827.
* Agrawal S, Kumar S, Agrawal M. Sleep Paralysis: A Clinical Review. J Neuropsychiatry Clin Neurosci. 2022 Aug 2;34(4):307-316. doi: 10.1176/appi.neuropsych.21070191. PMID: 35927050.
* Denis D, Poerio GL, Dingle K, Sharpless BA. Sleep paralysis and its associations with medical conditions, psychiatric disorders, and sleep quality. J Sleep Res. 2018 Apr;27(2):166-174. doi: 10.1111/jsr.12613. Epub 2017 Dec 28. PMID: 29329705; PMCID: PMC5842880.
* Denis D, Blagrove M, Sharpless BA, Dingle K, Poerio GL. Chest sensations during sleep paralysis: The role of threat and breathing. J Sleep Res. 2023 Oct;32(5):e13917. doi: 10.1111/jsr.13917. Epub 2023 Aug 27. PMID: 37628965.
* Sharpless BA, Barber JP. The epidemiology of sleep paralysis: a systematic review. Sleep Med Rev. 2011 Oct;15(5):317-25. doi: 10.1016/j.smrv.2011.01.001. Epub 2011 Feb 17. PMID: 21802956; PMCID: PMC3130790.
Q.
Sleeping 8 Hours and Still Tired? 7 Health Signs for Women 65+
A.
There are several factors to consider. For women 65+, waking tired after 8 hours often points to nonrestorative sleep and daytime impairment from fragmented or mis-timed sleep, sleep apnea with snoring or gasping, REM sleep behavior disorder with dream enactment, mood changes like anxiety or depression, or energy-sapping medical conditions and medications. See below for the key signs to watch for and step-by-step guidance on tracking symptoms, reviewing medicines, and when to contact a clinician for red flags such as shortness of breath, chest pain, frequent falls, or memory changes, since these details can influence your next healthcare decisions.
References:
* Barone, C., & Conte, C. (2019). Fatigue in the elderly. *Geriatrics & Gerontology International*, *19*(3), 209-216. PMID: 30873752. DOI: 10.1111/ggi.13626.
* Penninx, B. W. (2017). Depression and Anxiety in Older Adults: New Insights on Clinical Management and Prevention. *Current Psychiatry Reports*, *19*(11), 77. PMID: 29022061. DOI: 10.1007/s11920-017-0836-7.
* Chaker, L., Bianco, A. C., Jonklaas, J., & Peeters, R. P. (2017). Hypothyroidism. *The Lancet*, *390*(10101), 1550-1562. PMID: 28389319. DOI: 10.1016/S0140-6736(17)30703-1.
* Blumenfield, E. N., & Johnson, B. A. (2020). Anemia in Older Adults. *Primary Care: Clinics in Office Practice*, *47*(2), 173-191. PMID: 32247343. DOI: 10.1016/j.pop.2020.01.001.
* Randerath, W. J., & Schwalen, S. A. (2018). Sleep disordered breathing in the elderly. *Current Opinion in Pulmonary Medicine*, *24*(6), 570-575. PMID: 30204780. DOI: 10.1097/MCP.0000000000000519.
Q.
Tardive Dyskinesia: Signs, Relief & Management for Women 65+
A.
Tardive dyskinesia is a medication-related movement disorder that can affect women 65+, often appearing after months or years on antipsychotics or certain nausea and gut medicines, with signs like lip smacking, tongue rolling, facial grimacing, and hand or foot movements. Relief and management usually involve a careful medication review, FDA-approved TD treatments, and supportive therapies, with urgent medical attention if swallowing, breathing, or safety are affected; there are several factors to consider, so see below for key details on diagnosis, symptom tracking, sleep and emotional health, and step-by-step next actions to discuss with your doctor.
References:
* Hienert M, Stamenkovic M, Stamenkovic S, Vyssoki B, Kautzky A, Ristl R, Praschak-Rieder N, Willeit M. Tardive Dyskinesia in Elderly Patients: Pathophysiology and Treatment. J Clin Med. 2020 Jul 1;9(7):2059. doi: 10.3390/jcm9072059. PMID: 32626154; PMCID: PMC7408796.
* Kulkarni M, Kulkarni N, Jampala C. Treatment of Tardive Dyskinesia in Older Adults. J Geriatr Psychiatry Neurol. 2022 Sep;35(5):602-611. doi: 10.1177/08919887221102146. Epub 2022 Jul 3. PMID: 35780540.
* Cornett EM, Novitch M. Tardive Dyskinesia: An Update on Its Clinical Presentation, Pathophysiology, and Treatment. J Clin Mov Disord. 2020 Apr 7;3(1):15-22. doi: 10.15761/JCMDS.1000130. PMID: 32261546; PMCID: PMC7142490.
* Walder A, Sarwal A, Khasnavis S, Singh A. Risk Factors for Tardive Dyskinesia: A Systematic Review. Mov Disord Clin Pract. 2021 Jul 21;8(7):993-1004. doi: 10.1002/mdc3.13307. PMID: 34507026; PMCID: PMC8516075.
* Factor SA, Cloud LJ, Hunter CB, Lew MF, McGuire TR, Ondo WG, Salerno A. Practical Management of Tardive Dyskinesia. J Parkinsons Dis. 2021;11(3):947-957. doi: 10.3233/JPD-212574. PMID: 34262176; PMCID: PMC8492040.
Q.
Vivid Dreams When Falling Asleep: Is It a Health Warning Sign?
A.
Vivid dreams right as you fall asleep are usually normal, often tied to stress, poor sleep, irregular schedules, alcohol, or certain medications. There are several factors to consider. See below to understand more. Watch for warning signs that deserve medical advice, including acting out dreams, hallucinations that continue when awake, excessive daytime sleepiness, or sudden memory and coordination changes. See the complete guidance below, including practical sleep tips and when to use a REM sleep behavior disorder symptom check, to plan next steps.
References:
* Chee MJ, Lim MM, Choo YM, Koh YJ, Ho R, Chua YC. Hypnagogic Hallucinations: A Scoping Review of Their Prevalence, Characteristics, and Associated Disorders. J Clin Sleep Med. 2023 Dec 1;19(12):2155-2169. doi: 10.5664/jcsm.10842. PMID: 37731778.
* Sharpley AL, Willetts G. Hallucinations at Sleep Onset and Offset: Prevalence and Clinical Associations. J Sleep Res. 2021 Apr;30(2):e13192. doi: 10.1111/jsr.13192. Epub 2020 Sep 11. PMID: 32901962.
* Nielsen TA. Disturbing Dreams: Epidemiology and Comorbidity. Sleep Med Clin. 2017 Mar;12(1):15-22. doi: 10.1016/j.jsmc.2016.10.003. Epub 2016 Dec 2. PMID: 28166948.
* Tsuno N, Kawakami N, Baba S, Chiba K, Tsutsumi T, Shimada Y, Tanaka Y, Yasui-Furukori N, Hada Y, Endo Y, Kanbayashi T. Sleep-onset REM periods and REM sleep dysregulation in major depressive disorder. Prog Neuropsychopharmacol Biol Psychiatry. 2014 Jan 10;48:153-6. doi: 10.1016/j.pnpbp.2013.09.006. Epub 2013 Sep 26. PMID: 24080345.
* Thorpy MJ. Narcolepsy and Sleep Hallucinations. Sleep Med. 2009 Dec;10 Suppl 1:S15-8. doi: 10.1016/j.sleep.2009.09.006. PMID: 20042407.
Q.
Waking Up Frozen? Sleep Paralysis and Daytime Sleepiness After 65
A.
Sleep paralysis with daytime sleepiness after 65 is usually not dangerous, but it often points to disrupted sleep or treatable problems such as fragmented sleep, sleep apnea, medication effects, REM-related disorders, or neurologic conditions. Watch for frequent episodes, severe drowsiness, snoring or gasping, acting out dreams, or new memory and movement changes and talk with a doctor about evaluation and treatments like medication review or a sleep study. There are several factors to consider, and practical steps that can help, so see the complete guidance below to understand what to do next.
References:
* Denis D, Poels M, van der Kloet M, Schoutena L, van Someren E. Isolated sleep paralysis: an updated review. Sleep Med Rev. 2020 Feb;49:101235. doi: 10.1016/j.smrv.2019.101235. Epub 2019 Nov 22. PMID: 31805307.
* Zhang B, Hu S, Cui L, Zhang Y, Wang M, Li Y, Yang C, Fu Q, Yang C, Li S, Liu P. Sleep paralysis: an updated review of its epidemiology, mechanisms, and management. Sleep Breath. 2020 Jun;24(2):397-407. doi: 10.1007/s11325-019-01904-8. Epub 2019 Jun 15. PMID: 31209778.
* Yaremchuk K, Armon C. Excessive Daytime Sleepiness in Older Adults: A Clinician's Review. Clin Geriatr Med. 2021 Nov;37(4):539-555. doi: 10.1016/j.cger.2021.05.006. Epub 2021 Jun 17. PMID: 34246473.
* Chen T, Gao Y, He X, Zhang T, Huang M, Li Y, Han X, Li B. Sleep and daytime sleepiness in older adults: A systematic review and meta-analysis of cross-sectional studies. J Affect Disord. 2022 Oct 1;314:264-272. doi: 10.1016/j.jad.2022.07.039. Epub 2022 Jul 18. PMID: 35914361.
* Wang F, Pan C, Xu H, Wang Y, Xu C. Daytime sleepiness and cognitive function in older adults: A systematic review and meta-analysis. J Psychosom Res. 2021 Nov;150:110626. doi: 10.1016/j.jpsychores.2021.110626. Epub 2021 Aug 30. PMID: 34509890.
Q.
Waking Up Tired? Causes of Unrefreshing Sleep in Women 65+
A.
Unrefreshing sleep in women 65+ is common but not normal, and is often driven by treatable issues like sleep apnea, postmenopausal hormonal changes, chronic pain, restless legs, REM sleep problems, mood disorders, medication effects, circadian shifts, and low activity or daylight. There are several factors to consider; see complete guidance below for key warning signs, practical habit changes, and next steps in care. Seek care promptly if unrefreshing sleep lasts more than 3 to 4 weeks or is accompanied by loud snoring, gasping, acting out dreams, memory changes, or excessive daytime sleepiness.
References:
* Choi YJ, Lee SK. Sleep disorders in older women. J Midlife Health. 2018 Jan-Mar; 9(1): 1–5. doi: 10.4103/jmh.jmh_48_17. PMID: 29399268; PMCID: PMC5791334.
* Gum AM, Chui H, King SM, Dulin PL. Sleep quality in older women: exploring the role of anxiety and depressive symptoms. J Womens Health (Larchmt). 2011 May; 20(5): 709–716. doi: 10.1089/jwh.2010.2190. PMID: 21434850; PMCID: PMC3090001.
* Lerdal A, Wahl AK, Rustoen T, Moum T. Fatigue in older adults: A comprehensive review. Exp Gerontol. 2021 May; 147: 111283. doi: 10.1016/j.exger.2021.111283. Epub 2021 Feb 23. PMID: 33647413.
* Al-Amin HA, Al-Khalaf MM, Al-Sulaiman AS, Alshahrani S, Baig M, Al-Shahrani AM, Alshehri AM, Alsubai EA. Prevalence of Sleep Disorders and Related Risk Factors in Older Adults: A Systematic Review and Meta-Analysis. J Clin Sleep Med. 2023 Feb 1; 19(2): 291–305. doi: 10.5664/jcsm.10260. Epub 2022 Oct 26. PMID: 36284617; PMCID: PMC9896790.
* Mander BA, Winer JR, Jagust WJ, Walker MP. Sleep architecture changes across the adult lifespan: evidence from a polysomnography database. Sleep. 2019 Apr 1; 42(4): zsz014. doi: 10.1093/sleep/zsz014. PMID: 30677864; PMCID: PMC6473103.
Q.
Woke Up and Can’t Move? Causes & When to Seek Urgent Help
A.
Waking up unable to move is most often brief sleep paralysis during REM wake transitions and is usually harmless. Seek urgent help if symptoms include one-sided weakness, trouble speaking, facial droop, severe headache, vision loss, chest pain, shortness of breath, loss of consciousness, or confusion that does not improve; there are several factors to consider, so see the complete guidance below for other causes like seizures, stroke, medications, or low blood sugar, plus prevention tips and how to decide your next steps.
References:
* Gupta S, Singh Y, Mahajan SK, Singh A, Kalra S. Acute Flaccid Paralysis: A Clinical Approach. J Clin Neurol. 2021 Jul;17(4):453-463. doi:10.3988/jcn.2021.17.4.453
* Sharpless BA. Sleep paralysis. Psychol Bull. 2014 Sep;140(5):1223-47. doi:10.1037/a0037190
* Ma J, Wang X, Han S. Wake-Up Stroke: A Clinical Review. Front Neurol. 2021 Apr 22;12:666986. doi:10.3389/fneur.2021.666986
* Weber F. Primary Periodic Paralyses. J Neuromuscul Dis. 2017;4(3):289-299. doi:10.3233/JND-170249
* Rajabally YA. Management of acute neuromuscular weakness. Pract Neurol. 2017 Dec;17(6):448-459. doi:10.1136/practneurol-2017-001712
Q.
Can dementia medications like donepezil affect REM Sleep Behavior Disorder (RBD) symptoms?
A.
Dementia medications like donepezil might affect REM Sleep Behavior Disorder (RBD) symptoms, but the impact can vary depending on the individual and the specific condition.
References:
Lauterbach EC. (2004). The neuropsychiatry of Parkinson's disease and related .... The Psychiatric clinics of North America, 15550293.
https://pubmed.ncbi.nlm.nih.gov/15550293/
Hershey LA, & Coleman-Jackson R. (2019). Pharmacological Management of Dementia with Lewy .... Drugs & aging, 30680679.
Q.
Do blood pressure medications influence REM Sleep Behavior Disorder (RBD) episodes?
A.
Some blood pressure medications, like bisoprolol, can influence REM Sleep Behavior Disorder (RBD) episodes.
References:
Toba A, Ishikawa J, & Harada K. (2022). Increased blood pressure variability is associated with .... Blood pressure, 35426329.
https://pubmed.ncbi.nlm.nih.gov/35426329/
Iranzo A, & Santamaria J. (1999). Bisoprolol-induced rapid eye movement sleep behavior .... The American journal of medicine, 10527042.
https://pubmed.ncbi.nlm.nih.gov/10527042/
Okin PM, Hille DA, Larstorp AC, Wachtell K, Kjeldsen SE, Dahlöf B, & Devereux RB. (2015). Effect of lower on-treatment systolic blood pressure on the .... Hypertension (Dallas, Tex. : 1979), 26056336.
Q.
How is REM Sleep Behavior Disorder (RBD) medication dosage adjusted over time?
A.
REM Sleep Behavior Disorder (RBD) medication dosages, like sodium oxybate or rivastigmine, are adjusted based on how well the treatment works and the side effects experienced by the patient.
References:
During EH, Hernandez B, Miglis MG, Sum-Ping O, Hekmat A, Cahuas A, et al. (2023). Sodium oxybate in treatment-resistant rapid-eye-movement .... Sleep, 37052688.
https://pubmed.ncbi.nlm.nih.gov/37052688/
Vicuña EA, Kuttappan VA, Tellez G, Hernandez-Velasco X, Seeber-Galarza R, Latorre JD, et al. (2015). Dose titration of FITC-D for optimal measurement of enteric .... Poultry science, 25877413.
https://pubmed.ncbi.nlm.nih.gov/25877413/
Di Giacopo R, Fasano A, Quaranta D, Della Marca G, Bove F, & Bentivoglio AR. (2012). Rivastigmine as alternative treatment for refractory REM .... Movement disorders : official journal of the Movement Disorder Society, 22290743.
Q.
When should medication be reconsidered if REM Sleep Behavior Disorder (RBD) leads to physical injury?
A.
Medication for REM Sleep Behavior Disorder should be reconsidered if it leads to physical injuries, as effective management is crucial to prevent harm.
References:
Trotti LM, & Bliwise DL. (2013). Treatment of the Sleep Disorders Associated with Parkinson's .... Neurotherapeutics, 3899483.
https://pmc.ncbi.nlm.nih.gov/articles/PMC3899483/
Seppi K, Weintraub D, Coelho M, Perez-Lloret S, Fox SH, Katzenschlager R, et al. (2011). Treatments for the Non-Motor Symptoms of Parkinson's Disease. Movement disorders : official journal of the Movement Disorder Society, 4020145.
https://pmc.ncbi.nlm.nih.gov/articles/PMC4020145/
Stefani A, & Högl B. (2019). Diagnostic Criteria, Differential Diagnosis, and Treatment .... Current Treatment Options in Neurology, 6339673.
Q.
Can pramipexole help if REM Sleep Behavior Disorder (RBD) occurs with Parkinson's disease?
A.
Pramipexole may help some people with REM Sleep Behavior Disorder (RBD) in Parkinson's disease, but its effectiveness varies, and more research is needed.
References:
Schmidt MH, Koshal VB, & Schmidt HS. (2006). Use of pramipexole in REM sleep behavior disorder. Sleep medicine, 16815751.
https://pubmed.ncbi.nlm.nih.gov/16815751/
Kumru H, Iranzo A, Carrasco E, Valldeoriola F, Marti MJ, Santamaria J, & Tolosa E. (2008). Lack of effects of pramipexole on REM sleep behavior .... Sleep, 18853939.
https://pubmed.ncbi.nlm.nih.gov/18853939/
During EH, Malkani R, Arnulf I, Kunz D, Bes F, De Cock VC, et al. (2025). Symptomatic treatment of REM sleep behavior disorder .... Sleep medicine, 40408791.
Q.
Why is clonazepam often prescribed in low doses for REM Sleep Behavior Disorder (RBD)?
A.
Clonazepam is often prescribed in low doses for REM Sleep Behavior Disorder (RBD) because it is effective while minimizing potential side effects.
References:
Jung Y, & St Louis EK. (2016). Treatment of REM Sleep Behavior Disorder - PubMed - NIH. Current treatment options in neurology, 27752878.
https://pubmed.ncbi.nlm.nih.gov/27752878/
Ferini-Strambi L, & Marelli S. (2012). Sleep dysfunction in multiple system atrophy. Current treatment options in neurology, 22886854.
https://pubmed.ncbi.nlm.nih.gov/22886854/
Lee M, Kim TK, Hong JK, & Yoon IY. (2024). Minimal effect of long-term clonazepam on cognitive .... Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 38494993.
Q.
Can exercise influence REM Sleep Behavior Disorder (RBD) positively or negatively?
A.
Exercise can affect sleep and related disorders, but the exact impact on REM Sleep Behavior Disorder (RBD) is not clear from the provided references.
References:
Ophey A, Vinod V, Röttgen S, Scharfenberg D, Fink GR, Sommerauer M, et al. (2025). Accelerometry-derived features of physical activity, sleep .... Journal of neurology, 39934559.
https://pubmed.ncbi.nlm.nih.gov/39934559/
Lerche S, Gutfreund A, Brockmann K, Hobert MA, Wurster I, Sünkel U, et al. (2018). Effect of physical activity on cognitive flexibility, depression .... Clinical neurology and neurosurgery, 29331872.
Q.
Can sleep apnea occur together with REM Sleep Behavior Disorder (RBD)?
A.
Yes, sleep apnea can occur together with REM Sleep Behavior Disorder (RBD). People with RBD may also have sleep apnea, which affects their breathing during sleep.
References:
Gabryelska A, Roguski A, Simpson G, Maschauer EL, Morrison I, & Riha RL. (2018). Prevalence of obstructive sleep apnoea in REM behaviour .... Sleep & breathing = Schlaf & Atmung, 28951996.
https://pubmed.ncbi.nlm.nih.gov/28951996/
Giardino DL, Fasano P, & Garay A. (2021). The "respiratory REM sleep without atonia benefit" on .... Sleep science (Sao Paulo, Brazil), 34381583.
https://pubmed.ncbi.nlm.nih.gov/34381583/
Vorderwülbecke BJ, Lehmann R, & Breuer E. (2020). Sleep-Disordered Breathing in REM Sleep Behavior .... Journal of Parkinson's disease, 32390642.
Q.
Do lifestyle changes help manage REM Sleep Behavior Disorder (RBD) symptoms?
A.
Lifestyle changes, like regular exercise and a healthy diet, may help manage symptoms of REM Sleep Behavior Disorder (RBD), especially when linked to conditions like Parkinson's.
References:
Baghaei A, Kim HS, Dolhun R, Sherzai D, & Dashtipour K. (2025). Review of the Effects of Lifestyle Modification on Parkinson's .... American Journal of Lifestyle Medicine, 12494586.
https://pmc.ncbi.nlm.nih.gov/articles/PMC12494586/
Matar E, McCarter SJ, St Louis EK, & Lewis SJ. (2021). Current Concepts and Controversies in the Management of .... Neurotherapeutics, 8116413.
https://pmc.ncbi.nlm.nih.gov/articles/PMC8116413/
Reichmann H, Csoti I, Koschel J, Lorenzl S, Schrader C, Winkler J, & Wüllner U. (2022). Life style and Parkinson's disease - PMC - PubMed Central. Journal of Neural Transmission, 9463300.
Q.
How can family members support someone living with REM Sleep Behavior Disorder (RBD)?
A.
Family members can help someone with REM Sleep Behavior Disorder by making the sleeping area safe and supporting medical treatments.
References:
Chan PC, Lee HH, Hong CT, Hu CJ, & Wu D. (2018). REM Sleep Behavior Disorder (RBD) in Dementia with Lewy .... Behavioural Neurology, 6029467.
https://pmc.ncbi.nlm.nih.gov/articles/PMC6029467/
Prins EM, Pijpers A, Verbeek N, Darweesh SK, Geerlings AD, Meinders MJ, et al. (2025). The impact of REM-sleep behavior disorder on people with .... NPJ Parkinson's Disease, 12085624.
https://pmc.ncbi.nlm.nih.gov/articles/PMC12085624/
Schütz L, Sixel-Döring F, & Hermann W. (2022). Management of Sleep Disturbances in Parkinson's Disease. Journal of Parkinson's Disease, 9661340.
Q.
Is REM Sleep Behavior Disorder (RBD) hereditary?
A.
REM Sleep Behavior Disorder (RBD) may have a genetic component, as certain genetic variants are linked to this condition.
References:
Bjørnarå KA, Pihlstrøm L, Dietrichs E, & Toft M. (2018). Risk variants of the α-synuclein locus and REM sleep .... BMC neurology, 29466944.
https://pubmed.ncbi.nlm.nih.gov/29466944/
Ojo OO, Bandres-Ciga S, Makarious MB, Crea PW, Hernandez DG, Houlden H, et al. (2023). The non-coding GBA1 rs3115534 variant is associated .... medRxiv : the preprint server for health sciences, 38076854.
https://pubmed.ncbi.nlm.nih.gov/38076854/
Ojo OO, Bandres-Ciga S, Makarious MB, Crea PW, Hernandez DG, Houlden H, et al. (2024). GBA1 rs3115534 Is Associated with REM Sleep Behavior .... Movement disorders : official journal of the Movement Disorder Society, 38390630.
Q.
What is the difference between REM Sleep Behavior Disorder (RBD) and nightmares where you talk or shout?
A.
REM Sleep Behavior Disorder (RBD) is when people physically act out their dreams during sleep, often with movements and sounds, while nightmares with talking or shouting don't usually involve physical actions.
References:
Sobreira-Neto MA, Stelzer FG, Gitaí LL, Alves RC, Eckeli AL, & Schenck CH. (2023). REM sleep behavior disorder: update on diagnosis and .... Arquivos de Neuro-Psiquiatria, 10756822.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10756822/
Fasiello E, Scarpelli S, Gorgoni M, Alfonsi V, & De Gennaro L. (2022). Dreaming in Parasomnias: REM Sleep Behavior Disorder as a .... Journal of Clinical Medicine, 9654698.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9654698/
Boeve BF. (2010). REM Sleep Behavior Disorder: Updated Review of the Core .... Annals of the New York Academy of Sciences, 2902006.
Q.
What long-term management strategies are recommended for chronic REM Sleep Behavior Disorder (RBD)?
A.
There are no specific long-term management strategies for chronic REM Sleep Behavior Disorder (RBD) provided in the available references.
References:
Gordon WA, Hibbard MR, Egelko S, Diller L, Shaver MS, Lieberman A, & Ragnarsson K. (1985). Perceptual remediation in patients with right brain damage. Archives of physical medicine and rehabilitation, 4004531.
https://pubmed.ncbi.nlm.nih.gov/4004531/
Chakravorty SS, & Rye DB. (2003). Narcolepsy in the older adult: epidemiology, diagnosis and .... Drugs & aging, 12696996.
https://pubmed.ncbi.nlm.nih.gov/12696996/
Cunha BP, Freitas SMSF, Gomes GFO, & de Freitas PB. (2019). Hand Grip and Load Force Coordination of the Ipsilesional .... Journal of motor behavior, 30600789.
Q.
When should REM Sleep Behavior Disorder (RBD) be considered a medical emergency?
A.
REM Sleep Behavior Disorder (RBD) can be a medical emergency if it leads to injuries or if severe symptoms suddenly appear. Immediate medical attention is needed if someone acts out dreams violently or gets hurt.
References:
Bramich S, King A, Kuruvilla M, Naismith SL, Noyce A, & Alty J. (2022). Isolated REM sleep behaviour disorder - PubMed Central - NIH. Journal of Neurology, 9363360.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9363360/
Jin H, Zhang JR, Shen Y, & Liu CF. (2017). Clinical Significance of REM Sleep Behavior Disorders and .... Neuroscience Bulletin, 5636735.
https://pmc.ncbi.nlm.nih.gov/articles/PMC5636735/
Schaeffer E, & Berg D. (2021). Complications following REM sleep behavior disorder - PMC. Brain and Behavior, 8119867.
Q.
Are there medications that help reduce REM Sleep Behavior Disorder (RBD) episodes?
A.
Yes, there are medications that can help reduce episodes of REM Sleep Behavior Disorder (RBD), such as clonazepam and melatonin.
References:
Jung Y, & St Louis EK. (2016). Treatment of REM Sleep Behavior Disorder - PubMed - NIH. Current treatment options in neurology, 27752878.
https://pubmed.ncbi.nlm.nih.gov/27752878/
During EH, Malkani R, Arnulf I, Kunz D, Bes F, De Cock VC, et al. (2025). Symptomatic treatment of REM sleep behavior disorder .... Sleep medicine, 40408791.
https://pubmed.ncbi.nlm.nih.gov/40408791/
Que Z, Zheng C, Zhao Z, Weng Y, Zhu Z, Zeng Y, et al. (2022). The treatment efficacy of pharmacotherapies for rapid eye .... Heliyon, 36387478.
Q.
Can certain medications trigger or worsen REM Sleep Behavior Disorder (RBD)?
A.
Some medications, like certain antidepressants, can trigger or worsen REM Sleep Behavior Disorder (RBD).
References:
Onofrj M, Luciano AL, Thomas A, Iacono D, & D'Andreamatteo G. (2003). Mirtazapine induces REM sleep behavior disorder (RBD) .... Neurology, 12525729.
https://pubmed.ncbi.nlm.nih.gov/12525729/
Postuma RB, Gagnon JF, Tuineaig M, Bertrand JA, Latreille V, Desjardins C, & Montplaisir JY. (2013). Antidepressants and REM Sleep Behavior Disorder. Sleep, 24179289.
https://pubmed.ncbi.nlm.nih.gov/24179289/
Mahowald MW, Schenck CH, & Bornemann MA. (2007). Pathophysiologic mechanisms in REM sleep behavior .... Current neurology and neuroscience reports, 17355839.
Q.
Can improving sleep habits reduce RBD episodes?
A.
Improving sleep habits may help reduce episodes of REM Sleep Behavior Disorder (RBD), but more research is needed to understand the full effects.
References:
Taximaimaiti R, Luo X, & Wang XP. (2021). Pharmacological and Non-pharmacological Treatments of .... Current Neuropharmacology, 9185775.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9185775/
Elder GJ, Lazar AS, Alfonso‐Miller P, & Taylor J. (2022). Sleep disturbances in Lewy body dementia: A systematic review. International Journal of Geriatric Psychiatry, 9827922.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9827922/
Amara AW, Chahine LM, & Videnovic A. (2017). Treatment of Sleep Dysfunction in Parkinson's Disease. Current treatment options in neurology, 6371969.
Q.
Can REM Sleep Behavior Disorder (RBD) be an early warning sign of neurological illness?
A.
REM Sleep Behavior Disorder (RBD) can be an early sign of neurological diseases like Parkinson's. It often appears years before other symptoms.
References:
Postuma RB. (2014). Prodromal Parkinson's disease--using REM sleep behavior .... Parkinsonism & related disorders, 24262156.
https://pubmed.ncbi.nlm.nih.gov/24262156/
Postuma RB, Gagnon JF, & Montplaisir J. (2013). Rapid eye movement sleep behavior disorder as a .... Sleep medicine, 23058689.
https://pubmed.ncbi.nlm.nih.gov/23058689/
Barone DA, & Henchcliffe C. (2018). Rapid eye movement sleep behavior disorder and the link to .... Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 29883833.
Q.
Can REM Sleep Behavior Disorder (RBD) be confused with night terrors or PTSD-related nightmares?
A.
Yes, REM Sleep Behavior Disorder (RBD) can be confused with night terrors or PTSD-related nightmares because they all involve unusual behaviors during sleep, but they have different characteristics and occur at different sleep stages.
References:
Baltzan M, Yao C, Rizzo D, & Postuma R. (2020). Dream enactment behavior: review for the clinician - PMC. Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine, 8034224.
https://pmc.ncbi.nlm.nih.gov/articles/PMC8034224/
Meurling IJ, Leschziner G, & Drakatos P. (2022). What respiratory physicians should know about parasomnias. Breathe, 9584583.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9584583/
Singh S, Kaur H, Singh S, & Khawaja I. (2018). Parasomnias: A Comprehensive Review - PMC. Cureus, 6402728.
Q.
Can REM Sleep Behavior Disorder (RBD) episodes be violent or dangerous?
A.
Yes, REM Sleep Behavior Disorder (RBD) episodes can be violent or dangerous, as individuals may act out their dreams physically.
References:
Sixel-Döring F, Schweitzer M, Mollenhauer B, & Trenkwalder C. (2011). Intraindividual variability of REM sleep behavior disorder in .... Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 21344049.
https://pubmed.ncbi.nlm.nih.gov/21344049/
Ryan Williams R, & Sandigo G. (2017). Venlafaxine-induced REM Sleep Behavioral Disorder .... Trauma case reports, 29644271.
https://pubmed.ncbi.nlm.nih.gov/29644271/
Kass JS, & Rose RV. (2020). Criminal Culpability for Acts Committed During a Possible .... Continuum (Minneapolis, Minn.), 32756236.
Q.
Can REM Sleep Behavior Disorder (RBD) occur every night, or does it vary in frequency?
A.
REM Sleep Behavior Disorder (RBD) can happen every night or less often, depending on the person.
References:
Grenot M, Roman A, Villalba M, Morel AL, Fort P, Arthaud S, et al. (2024). Major alteration of motor control during rapid eye .... Sleep, 39121093.
https://pubmed.ncbi.nlm.nih.gov/39121093/
Reilly S, Dhaliwal S, Arshad U, Macerollo A, Husain N, & Costa AD. (2024). The effects of rivastigmine on neuropsychiatric symptoms .... European journal of neurology, 37975761.
Q.
Can REM Sleep Behavior Disorder (RBD) occur in younger adults or children?
A.
Yes, REM Sleep Behavior Disorder (RBD) can occur in children, although it is less common than in older adults.
References:
Stores G. (2008). Rapid eye movement sleep behaviour disorder in children .... Developmental medicine and child neurology, 18834385.
https://pubmed.ncbi.nlm.nih.gov/18834385/
Bellusci L, Grubbs G, Sait S, Herbst KW, Salazar JC, Khurana S, & The Connecticut Children's Covid Collaborative. (2024). Evolution of the Antigenic Landscape in Children and Young .... Vaccines, 38932367.
https://pubmed.ncbi.nlm.nih.gov/38932367/
Acharya SS. (2013). Rare bleeding disorders in children: identification and .... Pediatrics, 24127475.
Q.
Can stopping certain antidepressants improve REM Sleep Behavior Disorder (RBD) symptoms?
A.
Stopping certain antidepressants like duloxetine and venlafaxine may help improve REM Sleep Behavior Disorder symptoms.
References:
Tan L, Zhou J, Yang L, Ren R, Zhang Y, Li T, & Tang X. (2017). Duloxetine-induced rapid eye movement sleep behavior .... BMC Psychiatry, 5698922.
https://pmc.ncbi.nlm.nih.gov/articles/PMC5698922/
Kierlin L, & Littner MR. (2011). Parasomnias and Antidepressant Therapy: A Review of the .... Frontiers in Psychiatry, 3235766.
https://pmc.ncbi.nlm.nih.gov/articles/PMC3235766/
Ryan Williams R, & Sandigo G. (2017). Venlafaxine-induced REM sleep behavioral disorder .... Trauma Case Reports, 5887064.
Q.
Do people remember their dreams during REM Sleep Behavior Disorder (RBD) episodes?
A.
Yes, people with REM Sleep Behavior Disorder (RBD) often remember their dreams, which can be vivid and sometimes aggressive.
References:
Fasiello E, Scarpelli S, Gorgoni M, Alfonsi V, & De Gennaro L. (2022). Dreaming in Parasomnias: REM Sleep Behavior Disorder .... Journal of clinical medicine, 36362607.
https://pubmed.ncbi.nlm.nih.gov/36362607/
Fantini ML, Corona A, Clerici S, & Ferini-Strambi L. (2005). Aggressive dream content without daytime .... Neurology, 16217051.
https://pubmed.ncbi.nlm.nih.gov/16217051/
McCarter SJ, St Louis EK, Boswell CL, Dueffert LG, Slocumb N, Boeve BF, et al. (2014). Factors associated with injury in REM sleep behavior disorder. Sleep medicine, 25194585.
Q.
Do people with REM Sleep Behavior Disorder (RBD) experience daytime fatigue?
A.
Yes, people with REM Sleep Behavior Disorder (RBD) can experience daytime fatigue or sleepiness.
References:
Gjerstad MD, Alves G, & Maple-Grødem J. (2018). Excessive Daytime Sleepiness and REM Sleep Behavior .... Frontiers in neurology, 30487775.
https://pubmed.ncbi.nlm.nih.gov/30487775/
Diaconu Ș, Falup-Pecurariu O, Țînț D, & Falup-Pecurariu C. (2021). REM sleep behaviour disorder in Parkinson's disease .... Experimental and therapeutic medicine, 34131435.
https://pubmed.ncbi.nlm.nih.gov/34131435/
Xiang YQ, Xu Q, Sun QY, Wang ZQ, Tian Y, Fang LJ, et al. (2019). Clinical Features and Correlates of Excessive Daytime .... Frontiers in neurology, 30837940.
Q.
Does REM Sleep Behavior Disorder (RBD) increase the risk of developing Parkinson's disease?
A.
Yes, having REM Sleep Behavior Disorder (RBD) can increase the risk of developing Parkinson's disease.
References:
Postuma RB. (2014). Prodromal Parkinson's disease--using REM sleep behavior .... Parkinsonism & related disorders, 24262156.
https://pubmed.ncbi.nlm.nih.gov/24262156/
Postuma RB, Gagnon JF, & Montplaisir J. (2013). Rapid eye movement sleep behavior disorder as a .... Sleep medicine, 23058689.
https://pubmed.ncbi.nlm.nih.gov/23058689/
Postuma RB, Iranzo A, Hu M, Högl B, Boeve BF, Manni R, et al. (2019). Risk and predictors of dementia and parkinsonism in .... Brain : a journal of neurology, 30789229.
Q.
How does a sleep specialist diagnose REM Sleep Behavior Disorder (RBD)?
A.
To diagnose REM Sleep Behavior Disorder (RBD), a sleep specialist uses a sleep study called a polysomnogram to observe unusual movements or behaviors during REM sleep.
References:
Neikrug AB, & Ancoli-Israel S. (2012). Diagnostic tools for REM sleep behavior disorder. Sleep medicine reviews, 22169258.
https://pubmed.ncbi.nlm.nih.gov/22169258/
Rodriguez CL, Jaimchariyatam N, & Budur K. (2017). Rapid Eye Movement Sleep Behavior Disorder: A Review .... Chest, 28322726.
https://pubmed.ncbi.nlm.nih.gov/28322726/
Antelmi E, Lippolis M, Biscarini F, Tinazzi M, & Plazzi G. (2021). REM sleep behavior disorder: Mimics and variants. Sleep medicine reviews, 34186416.
Q.
How is melatonin used in the treatment of REM Sleep Behavior Disorder (RBD)?
A.
Melatonin is used to help manage REM Sleep Behavior Disorder (RBD) by reducing symptoms and improving sleep quality.
References:
Jung Y, & St Louis EK. (2016). Treatment of REM Sleep Behavior Disorder - PubMed - NIH. Current treatment options in neurology, 27752878.
https://pubmed.ncbi.nlm.nih.gov/27752878/
Aurora RN, Zak RS, Maganti RK, Auerbach SH, Casey KR, Chowdhuri S, et al. (2010). Best practice guide for the treatment of REM sleep .... Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 20191945.
https://pubmed.ncbi.nlm.nih.gov/20191945/
During EH, Malkani R, Arnulf I, Kunz D, Bes F, De Cock VC, et al. (2025). Symptomatic treatment of REM sleep behavior disorder .... Sleep medicine, 40408791.
Q.
How is REM Sleep Behavior Disorder (RBD) different from sleepwalking?
A.
REM Sleep Behavior Disorder (RBD) involves acting out dreams during REM sleep, while sleepwalking occurs during non-REM sleep and involves walking or performing complex behaviors without awareness.
References:
Uguccioni G, Golmard JL, de Fontréaux AN, Leu-Semenescu S, Brion A, & Arnulf I. (2013). Fight or flight? Dream content during sleepwalking/sleep .... Sleep medicine, 23601752.
https://pubmed.ncbi.nlm.nih.gov/23601752/
Wills L, & Garcia J. (2002). Parasomnias: epidemiology and management. CNS drugs, 12421114.
https://pubmed.ncbi.nlm.nih.gov/12421114/
Poryazova R, & Bassetti CL. (2007). [Sleep and movement disorders]. Therapeutische Umschau. Revue therapeutique, 17221827.
Q.
Is it dangerous to try to wake someone during an REM Sleep Behavior Disorder (RBD) episode?
A.
Waking someone during an REM Sleep Behavior Disorder episode is not dangerous, but it might be difficult and could cause confusion or agitation.
References:
Roguski A, Rayment D, Whone AL, Jones MW, & Rolinski M. (2020). A Neurologist's Guide to REM Sleep Behavior Disorder. Frontiers in Neurology, 7360679.
https://pmc.ncbi.nlm.nih.gov/articles/PMC7360679/
Sobreira-Neto MA, Stelzer FG, Gitaí LL, Alves RC, Eckeli AL, & Schenck CH. (2023). REM sleep behavior disorder: update on diagnosis and .... Arquivos de Neuro-Psiquiatria, 10756822.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10756822/
Trotti LM. (2010). REM Sleep Behaviour Disorder in Older Individuals. Drugs & aging, 2954417.
Q.
Is REM Sleep Behavior Disorder (RBD) linked to alcohol or substance use?
A.
REM Sleep Behavior Disorder (RBD) can be linked to alcohol and substance use, as suggested by research.
References:
Chakraborty R, Biswas T, Mishra BR, & Parmar A. (2024). Acute REM sleep behaviour disorder associated with .... Drug and alcohol review, 38287722.
Q.
Is REM Sleep Behavior Disorder (RBD) more common in older adults?
A.
Yes, REM Sleep Behavior Disorder (RBD) is more common in older adults.
References:
Trotti LM. (2010). REM sleep behaviour disorder in older individuals - PubMed. Drugs & aging, 20524706.
https://pubmed.ncbi.nlm.nih.gov/20524706/
Ju YE, Larson-Prior L, & Duntley S. (2011). Changing demographics in REM sleep behavior disorder. Sleep medicine, 21317035.
https://pubmed.ncbi.nlm.nih.gov/21317035/
Zhang X, Sun X, Wang J, Tang L, & Xie A. (2017). Prevalence of rapid eye movement sleep behavior disorder .... Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 27770275.
Q.
What are the typical behaviors seen during an REM Sleep Behavior Disorder (RBD) episode?
A.
During an REM Sleep Behavior Disorder (RBD) episode, people may act out their dreams with movements like punching, kicking, or jumping out of bed, which can be quite vigorous and sometimes aggressive.
References:
Manni R, Terzaghi M, & Glorioso M. (2009). Motor-behavioral episodes in REM sleep behavior disorder .... Sleep, 19238811.
https://pubmed.ncbi.nlm.nih.gov/19238811/
Cochen De Cock V. (2013). Recent data on rapid eye movement sleep behavior .... Sleep medicine, 23021864.
https://pubmed.ncbi.nlm.nih.gov/23021864/
Fantini ML, Corona A, Clerici S, & Ferini-Strambi L. (2005). Aggressive dream content without daytime .... Neurology, 16217051.
Q.
What causes the loss of normal muscle paralysis during REM sleep?
A.
Loss of normal muscle paralysis during REM sleep can happen due to problems in the brain areas that control muscle tone, causing a condition called REM sleep behavior disorder.
References:
Boeve BF, Silber MH, Saper CB, Ferman TJ, Dickson DW, Parisi JE, et al. (2007). Pathophysiology of REM sleep behaviour disorder ... - PubMed. Brain : a journal of neurology, 17412731.
https://pubmed.ncbi.nlm.nih.gov/17412731/
Luppi PH, Clément O, Sapin E, Gervasoni D, Peyron C, Léger L, et al. (2011). The neuronal network responsible for paradoxical sleep .... Sleep medicine reviews, 21115377.
https://pubmed.ncbi.nlm.nih.gov/21115377/
Peever J. (2011). Control of motoneuron function and muscle tone during .... Archives italiennes de biologie, 22205591.
Q.
What home safety measures should be taken for someone with REM Sleep Behavior Disorder (RBD)?
A.
For someone with REM Sleep Behavior Disorder (RBD), make the bedroom safe by removing sharp objects, padding furniture, and securing windows.
References:
Matar E, McCarter SJ, St Louis EK, & Lewis SJ. (2021). Current Concepts and Controversies in the Management of .... Neurotherapeutics, 8116413.
https://pmc.ncbi.nlm.nih.gov/articles/PMC8116413/
Trotti LM. (2010). REM Sleep Behaviour Disorder in Older Individuals. Drugs & aging, 2954417.
https://pmc.ncbi.nlm.nih.gov/articles/PMC2954417/
Sobreira-Neto MA, Stelzer FG, Gitaí LL, Alves RC, Eckeli AL, & Schenck CH. (2023). REM sleep behavior disorder: update on diagnosis and .... Arquivos de Neuro-Psiquiatria, 10756822.
Q.
What is the connection between REM Sleep Behavior Disorder (RBD) and neurodegenerative diseases?
A.
REM Sleep Behavior Disorder (RBD) is linked to an increased risk of developing neurodegenerative diseases like Parkinson's disease and dementia. It often appears years before these diseases are diagnosed.
References:
Galbiati A, Verga L, Giora E, Zucconi M, & Ferini-Strambi L. (2019). The risk of neurodegeneration in REM sleep behavior .... Sleep medicine reviews, 30503716.
https://pubmed.ncbi.nlm.nih.gov/30503716/
Gagnon JF, Postuma RB, Mazza S, Doyon J, & Montplaisir J. (2006). Rapid-eye-movement sleep behaviour disorder and .... The Lancet. Neurology, 16632313.
https://pubmed.ncbi.nlm.nih.gov/16632313/
Zanigni S, Calandra-Buonaura G, Grimaldi D, & Cortelli P. (2011). REM behaviour disorder and neurodegenerative diseases. Sleep medicine, 22136901.
Q.
What role does a polysomnography play in diagnosing REM Sleep Behavior Disorder (RBD)?
A.
Polysomnography is a key tool in diagnosing REM Sleep Behavior Disorder (RBD) by recording sleep patterns and detecting abnormal movements during REM sleep.
References:
Salsone M, Arabia G, Manfredini L, Quattrone A, Chiriaco C, Vescio B, et al. (2019). REM-Sleep Behavior Disorder in Patients With Essential .... Frontiers in neurology, 31068885.
https://pubmed.ncbi.nlm.nih.gov/31068885/
Manni R, Terzaghi M, Pacchetti C, & Nappi G. (2007). Sleep disorders in Parkinson's disease: facts and new .... Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 17235427.
https://pubmed.ncbi.nlm.nih.gov/17235427/
Gunter KM, Brink-Kjaer A, Mignot E, Sorensen HBD, During E, & Jennum P. (2023). A Spectral Vision Transformer for the Detection of REM .... IEEE journal of biomedical and health informatics, 37402190.
Q.
What role does clonazepam play in REM Sleep Behavior Disorder (RBD) treatment?
A.
Clonazepam is commonly used to help treat REM Sleep Behavior Disorder (RBD) by reducing abnormal movements during sleep.
References:
Ferri R, Marelli S, Ferini-Strambi L, Oldani A, Colli F, Schenck CH, & Zucconi M. (2013). An Observational Clinical and Video-Polysomnographic .... Sleep medicine, 23098778.
https://pubmed.ncbi.nlm.nih.gov/23098778/
Olson EJ, Boeve BF, & Silber MH. (2000). Rapid eye movement sleep behaviour disorder. Brain : a journal of neurology, 10648440.
https://pubmed.ncbi.nlm.nih.gov/10648440/
Poryazova RG, & Zachariev ZI. (2005). REM sleep behavior disorder in patients with Parkinson's .... Folia medica, 16152765.
Q.
Why do people act out their dreams in REM Sleep Behavior Disorder (RBD)?
A.
In REM Sleep Behavior Disorder (RBD), people act out their dreams because the brain fails to keep the body still during REM sleep, allowing dream movements to occur.
References:
Blumberg MS, & Plumeau AM. (2016). A new view of "dream enactment" in REM sleep behavior .... Sleep medicine reviews, 26802823.
https://pubmed.ncbi.nlm.nih.gov/26802823/
Postuma RB, Gagnon JF, & Montplaisir JY. (2012). REM sleep behavior disorder: from dreams to .... Neurobiology of disease, 22019718.
https://pubmed.ncbi.nlm.nih.gov/22019718/
Dauvilliers Y, Schenck CH, Postuma RB, Iranzo A, Luppi PH, Plazzi G, et al. (2018). REM sleep behaviour disorder. Nature reviews. Disease primers, 30166532.
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Postuma RB, Iranzo A, Hu M, Högl B, Boeve BF, Manni R, Oertel WH, Arnulf I, Ferini-Strambi L, Puligheddu M, Antelmi E, Cochen De Cock V, Arnaldi D, Mollenhauer B, Videnovic A, Sonka K, Jung KY, Kunz D, Dauvilliers Y, Provini F, Lewis SJ, Buskova J, Pavlova M, Heidbreder A, Montplaisir JY, Santamaria J, Barber TR, Stefani A, St Louis EK, Terzaghi M, Janzen A, Leu-Semenescu S, Plazzi G, Nobili F, Sixel-Doering F, Dusek P, Bes F, Cortelli P, Ehgoetz Martens K, Gagnon JF, Gaig C, Zucconi M, Trenkwalder C, Gan-Or Z, Lo C, Rolinski M, Mahlknecht P, Holzknecht E, Boeve AR, Teigen LN, Toscano G, Mayer G, Morbelli S, Dawson B, Pelletier A. Risk and predictors of dementia and parkinsonism in idiopathic REM sleep behaviour disorder: a multicentre study. Brain. 2019 Mar 1;142(3):744-759. doi: 10.1093/brain/awz030. PMID: 30789229; PMCID: PMC6391615.
https://academic.oup.com/brain/article/142/3/744/5353011?login=falseFernández-Arcos A, Iranzo A, Serradell M, Gaig C, Santamaria J. The Clinical Phenotype of Idiopathic Rapid Eye Movement Sleep Behavior Disorder at Presentation: A Study in 203 Consecutive Patients. Sleep. 2016 Jan 1;39(1):121-32. doi: 10.5665/sleep.5332. PMID: 26940460; PMCID: PMC4678361.
https://academic.oup.com/sleep/article/39/1/121/2726045?login=falseFasiello E, Scarpelli S, Gorgoni M, Alfonsi V, Galbiati A, De Gennaro L. A systematic review of dreams and nightmares recall in patients with rapid eye movement sleep behaviour disorder. J Sleep Res. 2023 Jun;32(3):e13768. doi: 10.1111/jsr.13768. Epub 2022 Oct 31. PMID: 36316953.
https://onlinelibrary.wiley.com/doi/10.1111/jsr.13768Miglis MG, Adler CH, Antelmi E, Arnaldi D, Baldelli L, Boeve BF, Cesari M, Dall'Antonia I, Diederich NJ, Doppler K, Dušek P, Ferri R, Gagnon JF, Gan-Or Z, Hermann W, Högl B, Hu MT, Iranzo A, Janzen A, Kuzkina A, Lee JY, Leenders KL, Lewis SJG, Liguori C, Liu J, Lo C, Ehgoetz Martens KA, Nepozitek J, Plazzi G, Provini F, Puligheddu M, Rolinski M, Rusz J, Stefani A, Summers RLS, Yoo D, Zitser J, Oertel WH. Biomarkers of conversion to α-synucleinopathy in isolated rapid-eye-movement sleep behaviour disorder. Lancet Neurol. 2021 Aug;20(8):671-684. doi: 10.1016/S1474-4422(21)00176-9. PMID: 34302789; PMCID: PMC8600613.
https://www.thelancet.com/journals/laneur/article/PIIS1474-4422(21)00176-9/fulltextSchenck CH, Mahowald MW. Rapid eye movement sleep parasomnias. Neurol Clin. 2005 Nov;23(4):1107-26. doi: 10.1016/j.ncl.2005.06.002. PMID: 16243618.
https://www.sciencedirect.com/science/article/abs/pii/S0733861905000435?via%3Dihub