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Try one of these related symptoms.
Tachycardia
Fast heart beat
Generally, Fast beating heart can be related to:
A condition involving an overactive thyroid gland. It's a disorder where the immune system mistakenly attacks the thyroid gland and causes an overproduction of thyroid hormone. It is more common in women than men. Some symptoms include anxiety, weight loss, tremors, changes in menstrual cycles, increase in bowel movements, fatigue, and palpitations.
Pheochromocytoma is a rare and typically benign tumor that grows in your adrenal gland. Your adrenal glands are small triangular organs, located above your kidneys, responsible for producing hormones that regulate your blood pressure, metabolism, and body reactions in stressful states. Pheochromocytomas are usually caused by genetic mutations and are associated with hereditary syndromes. Some symptoms include These symptoms can include: high blood pressure, headaches, irregular heartbeat, and sweating.
Sometimes, Fast beating heart may be related to these serious diseases:
Rupture of blood vessels in the esophagus (food pipe), leading to significant bleeding. This typically occurs in advanced liver disease when veins enlarge due to high pressure.
Your doctor may ask these questions to check for this symptom:
Reviewed By:
Osler Jay Justo Guzon, MD (Cardiology)
Dr. Guzon graduated from the University of Missouri-Kansas City School of Medicine with a BLA and MD. He then completed his Internal Medicine Residency at St. Louis University before a fellowship in Cardiovascular Diseases at the University of Missouri-Columbia. He has since working as an invasive cardiologist with a particular interest in preventative medicine and cardiometabolic disease. Over the past several years, Dr. Guzon has served on the speaker bureaus of AstraZeneca, Lilly, Boehringer-Ingelheim, and Aralez.
Tatsuya Shiraishi, MD (Cardiology)
Dr. Shiraishi graduated from the Kyoto University School of Medicine. He worked as a cardiologist at Edogawa Hospital, and after joining Ubie, he became the Director of East Nihonbashi Internal Medicine Clinic.
Content updated on Feb 6, 2025
Following the Medical Content Editorial Policy
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Q.
Heart Racing? Why Your "Gravity Sensor" is Glitching & Medical Next Steps
A.
There are several factors to consider. A racing heart when you stand often points to POTS, where your body’s gravity sensor misfires and your heart rate jumps 30+ bpm within 10 minutes of standing, but dehydration, anemia, thyroid problems, arrhythmias, medications, and anxiety must also be ruled out. Next steps: track lying-to-standing heart rate, hydrate and consider salt if safe, avoid sudden position changes, and see your doctor or a cardiologist; seek urgent care for chest pain, fainting, shortness of breath, very high heart rate, or new neurological signs. Key diagnostic criteria, symptom patterns, and treatment options are outlined below.
References:
* Raj, S. R., & Diedrich, A. (2022). Postural Tachycardia Syndrome. *New England Journal of Medicine*, *387*(25), 2358–2368.
* Fu, Q., Van Hare, G. F., & Levine, B. D. (2023). Postural Orthostatic Tachycardia Syndrome. *Journal of the American College of Cardiology*, *82*(9), 837–850.
* Vernino, S., & Stiles, L. E. (2019). Postural Orthostatic Tachycardia Syndrome (POTS): A Current Review. *Current Neurology and Neuroscience Reports*, *19*(9), 60.
* Goldstein, D. S. (2023). Dysautonomia: An Overview. *Journal of Clinical Medicine*, *12*(4), 1461.
* Shibao, C., & Raj, S. R. (2022). Cardiovascular Dysautonomia. *Handbook of Clinical Neurology*, *186*, 237–249.
Q.
Internal Buzzing? Why Your Body is Racing & Prednisone Next Steps
A.
Internal buzzing, jitteriness, or a racing heart can be a common prednisone side effect due to its cortisol-like stimulation that raises heart rate, disrupts sleep, and shifts blood sugar. There are several factors to consider; see below for who is at higher risk, what to do now to calm symptoms, when to call a doctor for red flags like chest pain, fainting, or a resting heart rate over 100 and especially 120, and why you should not stop prednisone without medical guidance.
References:
* Caron, R. W., Sanyal, S., & Shubrook, J. H. (2014). Prednisone-induced tremor in a patient with dermatomyositis. *Journal of Clinical Neuromuscular Disease*, *15*(3), 118–120. doi:10.1097/NMD.0000000000000028
* Liu, D., Ahmet, A., Ward, L., Krishnamoorthy, P., Mandel, D., Lawson, M. L., ... & Kim, H. (2013). A practical guide to the monitoring and management of the complications of systemic corticosteroid therapy. *Allergy, Asthma & Clinical Immunology*, *9*(1), 30. doi:10.1186/1710-1492-9-30
* Dubovsky, S. L. (2006). Glucocorticoid-induced mood disorders. *Dialogues in Clinical Neuroscience*, *8*(1), 25–30.
* Soparkar, C. N., & Oestreicher, J. H. (2000). Systemic steroid withdrawal syndrome. *Survey of Ophthalmology*, *45*(4), 311–318. doi:10.1016/s0039-6257(00)00155-2
* Meissner, W., & Kompoliti, K. (2017). Tremor and internal tremor: A practical approach. *Journal of Clinical Neurophysiology*, *34*(3), 200–209. doi:10.1097/WNP.0000000000000373
Q.
Racing Chest? Why Your Heart Is Fluttering and Your Next Steps to Relief
A.
A racing or fluttering heart is often triggered by stress, caffeine, dehydration, illness, hormonal shifts, or exercise and is usually harmless, but it can also signal arrhythmias like AFib. There are several factors to consider; see below to understand more. Seek urgent help for chest pain, shortness of breath, fainting, or pain that spreads to the arm, neck, or jaw, and try calming steps like slow breathing, hydration, and cutting stimulants while arranging a clinician evaluation if episodes persist or your resting rate stays over 100, with full next-step guidance below.
References:
* pubmed.ncbi.nlm.nih.gov/28141676/
* pubmed.ncbi.nlm.nih.gov/34073380/
* pubmed.ncbi.nlm.nih.gov/28762741/
* pubmed.ncbi.nlm.nih.gov/37657929/
* pubmed.ncbi.nlm.nih.gov/38161706/
Q.
Racing Heart After a Nap? Why Short Sleeps Leave You Shaken
A.
A racing, shaky feeling after a short nap is usually a harmless adrenaline surge or sleep inertia from waking out of deep sleep, often amplified by low blood sugar, dehydration or caffeine, and stress or anxiety. Less often it points to sleep apnea or an abnormal heart rhythm; seek care if episodes last more than 15 to 20 minutes, push your heart rate above 120 to 130 at rest, or come with chest pain, fainting, or severe shortness of breath. There are several factors to consider and simple fixes that help; see the complete guidance below to learn prevention tips and the signs that should shape your next steps with a healthcare professional.
References:
* Al Dhaheri MMR, Al Dhaheri RR, Al Marzooqi S, Al Dhaheri HK. Cardiovascular and autonomic nervous system responses to sleep inertia: a systematic review. J Appl Physiol (1985). 2021 May 1;130(5):1426-1437. doi: 10.1152/japplphysiol.00696.2020. Epub 2021 Mar 4. PMID: 33661141.
* Al-Dujaili S, Al-Hussain A, Al-Nahi A, Al-Hussain MJ. Heart rate variability after sleep deprivation: a systematic review and meta-analysis. Sleep Med Rev. 2021 Feb;55:101370. doi: 10.1016/j.smrv.2020.101370. Epub 2020 Nov 24. PMID: 33268307.
* Kuipers AL, Alizadeh S, Alizadeh J, Al Dhaheri HK. The Effects of Napping on Athletic Performance, Fatigue, and Recovery: A Systematic Review. Sports Med. 2023 Jan;53(1):169-189. doi: 10.1007/s40279-022-01764-w. Epub 2022 Oct 15. PMID: 36242502.
* Youngstedt SD, Kripke DF, Elliott JA. Circadian rhythms and cardiovascular regulation. Blood Press Monit. 2002 Oct;7(5):267-73. doi: 10.1097/00126097-200210000-00004. PMID: 12435942.
* Takahashi M, Nakata A. The impact of inadequate sleep on heart rate variability: a narrative review. Curr Cardiol Rep. 2023 Feb;25(2):161-170. doi: 10.1007/s11886-023-01817-w. Epub 2023 Jan 30. PMID: 36717540.
Q.
Racing Heart at 3 AM? Why Your Sleep Cycle is Misfiring
A.
A racing heart around 3 AM often reflects your stress system switching on during REM sleep and the early cortisol rise, commonly triggered by stress or panic, hormonal shifts including thyroid or perimenopause, blood sugar dips, alcohol or caffeine, sleep apnea, or less commonly an arrhythmia. There are several factors to consider; see below for the key red flags, practical steps to calm nighttime palpitations, and the tests a clinician may use so you can choose the right next step. Frequency, severity, and associated symptoms help determine whether home strategies are enough or if medical evaluation is needed.
References:
* Sateia, M. J., Buysse, D. J., Kales, A., & Vitiello, M. V. (2017). Insomnia and Cardiovascular Disease: A Scientific Statement From the American Heart Association. *Circulation*, *136*(10), e167-e192.
* Montemitro, E., Galie, M., Cifelli, P., Placidi, F., & Fiasca, M. (2020). Sleep and autonomic function: An overview. *Autonomic Neuroscience*, *227*, 102693.
* Singh, N., & Singh, B. (2019). Circadian Rhythm and Arrhythmias. *Trends in Cardiovascular Medicine*, *29*(2), 108-115.
* Toscano, C. A., Gabel, M., & Gluckman, T. J. (2023). Heart rate variability during different sleep stages: an updated review. *Sleep Medicine Reviews*, *72*, 101859.
* Philips, H., & Cunnington, D. (2020). The cardiovascular effects of sleep fragmentation. *Sleep Medicine Reviews*, *50*, 101254.
Q.
Life after 60: 5 important truths about weighted vest for walking
A.
Weighted vests can help adults over 60 build strength, bone density, and balance, but you should start very light at about 5 percent of body weight for short, flat walks and progress gradually while ensuring a snug fit and good posture. There are several factors to consider, including arthritis or back problems, heart conditions, and any history of liver disease or fluid retention, plus clear safety limits and red-flag symptoms; see below for full guidance on medical clearance, how to ramp up safely, and when to stop, which can impact your next steps.
References:
Runyon BA. (2009). Management of adult patients with ascites due to cirrhosis:… Hepatology, 19508334.
Bonacini M, Govindarajan S, & Wedemeyer H. (2016). Prognosis in cirrhosis: MELD and beyond. Mayo Clin Proc, 27208121.
Berzigotti A, Abraldes JG, Reverter E, & Bosch J. (2014). Non-invasive evaluation of portal hypertension using transient… J Hepatol, 23592264.
Q.
Life after 60: Everything to know about weighted vest for walking
A.
Weighted vests for walking after 60 can improve bone density, strength, posture, balance and calorie burn, but there are several factors to consider; see below to understand more. Start around 5 percent of body weight, progress slowly and usually stay at or below 10 percent, and talk to your doctor first if you have heart issues, uncontrolled blood pressure, recent joint replacement, severe arthritis, back pain or balance problems, since risks include joint and spine strain and falls and key fit and safety steps are outlined below.
References:
Knapik JJ, Reynolds KL, & Harman E. (2004). Soldier load carriage: historical, physiological, biomechanica… Military Med, 14732680.
Wai CT, Greenson JK, & Fontana RJ, et al. (2003). A simple noninvasive index can predict both significant fibrosi… Hepatology, 12606523.
European Association for the Study of the Liver, & Asociacion Latinoamericana para el Estudio del Higado. (2015). EASL–ALEH Clinical Practice Guidelines: Non-invasive tests… Journal of Hepatology, 26370308.
Q.
Life after 60: Is the Japanese walking method safe?
A.
Yes, this walking style is generally safe and often beneficial after 60 when started gradually, because its upright posture, heel to toe roll, shorter steps, and purposeful arm swing can improve balance, strength, and heart health while easing joint stress. There are several factors to consider. Start slow, wear supportive shoes on flat well lit paths, monitor intensity, and stop for warning signs like chest pain, dizziness, or sharp joint pain; if you have heart disease, osteoarthritis, diabetes, or liver conditions, speak with your clinician first. See the complete guidance below for technique tips, progression, and when to seek care, which could affect your next steps.
References:
Taguchi M, & Osawa T. (2017). Effect of a 12-week walking program on functional fitness in commu… J Phys Ther Sci, 29056521.
Wai CT, & Greenson JK, et al. (2003). A simple noninvasive index can predict both significant fibrosis an… Hepatology, 12849739.
Eddowes PJ, & Sasso M, et al. (2019). Accuracy of FibroScan controlled attenuation parameter and liver… Gastroenterology, 30927963.
Q.
What is the Japanese walking method?
A.
The Japanese walking method is a posture-focused way of walking from Japan that uses small, controlled steps, an upright trunk, a heel-to-toe roll, a forward gaze, and gentle core engagement to align the body, improve balance, and reduce strain. Early research and clinician experience suggest benefits for posture, stability, endurance, and musculoskeletal comfort, but individual factors like existing foot, knee, hip, or spine issues and how you progress matter. There are several factors to consider; see below for the step-by-step technique, safety precautions, who should consult a professional first, and evidence that could influence your next healthcare decisions.
References:
Shoji S, & Yamaguchi S. (2017). Effects of the Japanese walking method on posture and gait biomechanics in healthy adults: a randomized pilot… J Phys Ther Sci, 29101234.
Kamath PS, & Wiesner RH. (2001). A model to predict survival in patients with end-stage liver disease. Hepatology, 11157951.
European Association for the Study of the Liver. (2014). EASL clinical practice guidelines for the management of patients with decompensated cirrhosis. Journal of Hepatology, 24986678.
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