Your Health Questions
Answered by Professionals

Bloody diarrhea can be caused by short-term infections, but it can also signal inflammatory bowel disease like ulcerative colitis or Crohn’s; if symptoms last more than two weeks, recur with blood, or come with weight loss or fatigue, seek medical evaluation. Diagnosis may include stool tests, blood work and colonoscopy, and urgent care is needed for high fever, severe abdominal pain, dehydration, or heavy bleeding. There are several factors to consider; see below for key differences from infections, other causes to rule out, red-flag symptoms, and the testing and treatment options to discuss with your doctor.

There are several factors to consider; see below to understand more. The most suggestive symptoms are persistent abdominal pain, chronic diarrhea sometimes with blood, unintended weight loss, fatigue, fever, mouth sores, and perianal problems. The most diagnostic tests are fecal calprotectin and inflammatory blood markers to screen for gut inflammation, with colonoscopy and biopsies as the gold standard and MR or CT enterography to define extent and complications; no single test stands alone, so key next steps and red flags are explained below.

There are several factors to consider: persistent diarrhea, blood in the stool, urgency, cramping, weight loss or fatigue can signal ulcerative colitis, sometimes with symptoms outside the gut, and red flags like heavy bleeding, high fever, severe constant pain, or dehydration need urgent care. Diagnosis involves stool and blood tests and a colonoscopy, and treatment depends on severity and extent, ranging from 5-ASA medicines to steroids, biologics, or surgery; see below for how to tell UC from IBS or infections, what to watch for, and which next steps may be right for you.

Face drooping that shows up only when you laugh is often normal asymmetry, but new or sudden drooping at rest, especially with arm weakness, speech trouble, severe headache, or vision changes, can point to Bell’s palsy or a stroke and needs urgent care. There are several factors to consider. See the complete breakdown below for the key differences to watch for, when to call emergency services, and step by step next moves including self checks, symptom tools, and treatments that can change outcomes.

There are several factors to consider. If extra, consistent sleep quickly fixes the problem, it is likely sleep deprivation; if sleepiness persists despite 8-10 hours or includes sleep attacks, cataplexy, long unrefreshing naps, or loud snoring with gasps, suspect a sleep-wake disorder. See below for the key tools and next steps that can change your plan, including the Epworth Sleepiness Scale, a 1-2 week sleep diary, practical sleep hygiene, and when to see a sleep specialist or seek urgent care.

There are several factors to consider, but the immediate priority is safety: pull over safely, take a 15 to 20 minute nap, have one caffeinated drink after you stop, and switch drivers if possible; more step by step tips are below. Causes can include sleep apnea, narcolepsy, shift work disorder, chronic insomnia, hypothyroidism, anemia, diabetes, cirrhosis with hepatic encephalopathy, depression or anxiety, and sedating medications; see below for the full list of causes, key warning signs that need urgent care, and guidance on when to see a doctor.

These are usually hypnagogic hallucinations, vivid dream-like sensations as you fall asleep that are common, brief, and generally harmless. There are several factors to consider; seek care if they are frequent or disruptive, or if you also have severe daytime sleepiness, sleep paralysis, or sudden muscle weakness that could suggest narcolepsy. See below for practical steps to reduce them, what causes them, and when a sleep evaluation or other next steps may be appropriate.

There are several factors to consider. See below to understand more. Post-meal sleepiness often reflects normal blood-flow shifts, insulin and neurotransmitter effects, circadian dips, and the impact of large, high-fat or protein-heavy meals, not just carbohydrates. If tiredness is frequent or intense, it may signal postprandial hypotension, reactive hypoglycemia, or liver disease, and the key red flags, simple fixes, and when to seek tests or care are outlined below to guide your next steps.

Dreaming as soon as you fall asleep often reflects shortened REM latency and altered sleep architecture. It can happen after sleep loss, stress, or schedule changes, but frequent onset dreams plus daytime sleepiness, cataplexy, vivid hallucinations, snoring or gasping can indicate narcolepsy, sleep apnea, mood disorders, or medication effects. There are several factors to consider. See below for what is normal, red flags, practical at-home steps, and when to seek tests like a sleep study or MSLT that could shape your next healthcare decisions.

Sleep attacks are sudden, irresistible bouts of sleep; in narcolepsy the brain’s sleep-wake switch can flip because hypocretin neurons are lost, leading to abrupt sleep and REM-like symptoms. Other causes to consider include obstructive sleep apnea, circadian rhythm problems, liver disease or cirrhosis, certain medications or alcohol, and idiopathic hypersomnia. If these episodes disrupt daily life or happen in risky situations, seek medical care, since diagnosis may involve sleep studies and treatment can include lifestyle changes, wake-promoting medicines, CPAP, or addressing liver disease. There are several factors to consider, and important details that could affect your next steps are explained below.

There are several factors to consider. See below to understand more. Repeatedly nodding off at work often means your brain is forcing a reset from built-up sleep pressure due to sleep debt or circadian disruption, but it can also signal sleep disorders like sleep apnea, shift work strain, sedating medications, or medical problems such as depression, thyroid disease, diabetes, or liver disease with hepatic encephalopathy; if it persists despite good sleep habits or you notice red flags like confusion, gasping during sleep, or sudden sleep attacks, seek care and use the guidance below for practical fixes, testing, and when to see a specialist.

Sudden leg weakness with laughter is most often cataplexy, a hallmark of narcolepsy type 1 where REM-like muscle atonia intrudes into wakefulness due to orexin deficiency, so people go limp yet remain conscious. There are several other possibilities to consider, including atonic seizures, vasovagal syncope, orthostatic hypotension, and rare neuromuscular disorders; see below for key signs to tell them apart, diagnostic testing, proven treatments, safety steps, and when to seek urgent care.

These often occur together because chronic gut blood loss, malabsorption from conditions like celiac or IBD, inflammation that traps iron, and reduced intake with frequent stools can all cause iron deficiency. There are several factors to consider; see below to understand more. Workup typically includes history and exam, CBC with iron studies and celiac screening, stool tests for blood, infection and inflammation, and targeted endoscopy or imaging, with treatment aimed at iron repletion plus the underlying cause; urgent red flags like black stools, severe pain, fever, fainting, or rapid weight loss need immediate care, and important details on next steps are outlined below.

Mouth ulcers plus diarrhea can signal Crohn’s because this inflammatory bowel disease can involve the GI tract from mouth to anus, so oral lesions often flare alongside intestinal inflammation that drives persistent diarrhea. If this combination lasts more than two weeks or is accompanied by red flags like weight loss, blood or mucus in stool, fever, or joint or eye symptoms, seek prompt medical care. There are several factors to consider and important tests and treatments that may apply; see below for the complete answer and next steps.

The strongest predictors of a narcolepsy-related sleep disorder are high daytime sleepiness on the Epworth Sleepiness Scale, especially when paired with cataplexy, REM-intrusion symptoms like sleep paralysis or hypnagogic hallucinations, and sometimes fragmented sleep or automatic behaviors. Only a sleep specialist can make the diagnosis. There are several factors to consider; see below for a quick self-quiz, how to interpret risk using cutoffs like an ESS of 10 or higher with additional symptoms, and practical next steps such as keeping a sleep diary, seeking formal sleep studies, and knowing when to get care.

Nighttime diarrhea that wakes you from sleep is an alarm feature because intestinal activity should slow during sleep, so it often signals an organic cause like inflammatory bowel disease, infection, celiac disease, microscopic colitis, endocrine problems, medication effects, or malabsorption, and it typically prompts targeted testing rather than assuming IBS. There are several factors to consider, including red flags that need urgent care and which tests and treatments fit different causes. See the complete details below to understand what to watch for and which next steps may be right for you.

There are several factors to consider. Irritation usually means sharp or burning pain at the anal margin with bright red blood on tissue, itching, or tender lumps after straining or sitting; infection more often causes deep, throbbing pain with rectal discharge, fever, tenesmus, or genital sores after sexual exposure; inflammatory disease tends to cause persistent pain with bloody mucus diarrhea, urgency including at night, weight loss or fatigue, and in cirrhosis, possible painless bleeding from rectal varices. See below for the full symptom checklist, urgent red flags, risk factors, and the key tests and first treatments that could change your next steps in care.

Sleep attacks are sudden, irresistible bouts of sleepiness that can strike without warning and are not normal when recurrent, especially if they occur while driving; tracking timing, triggers, duration, and associated symptoms helps distinguish them from routine fatigue. Diagnoses to consider include narcolepsy, idiopathic hypersomnia, obstructive sleep apnea, medication or substance effects, shift work or circadian rhythm disorders, medical or neurologic conditions such as hypothyroidism, multiple sclerosis, Parkinson disease, or liver disease with encephalopathy, and psychiatric disorders like depression or bipolar disorder; there are several factors to consider, and important details on evaluation, red flags, testing, and treatments are outlined below.

There are several factors to consider. Sleep paralysis with daytime sleepiness can signal treatable sleep disorders like narcolepsy, obstructive sleep apnea, or idiopathic hypersomnia, or be linked to anxiety, depression, medications, or irregular schedules; red flags include persistent fatigue despite 7 to 9 hours of sleep, loud snoring or gasping, hallucinations at sleep onset or waking, and sudden emotion triggered weakness. See below for how to get evaluated and treated, including the Epworth Sleepiness Scale, sleep diaries, overnight and daytime sleep studies, and targeted options from sleep hygiene to CPAP and medications, so you can choose the right next steps.

Sleep paralysis hallucinations happen when REM sleep muscle paralysis and dream imagery intrude into wakefulness, often felt as a presence in the room, chest pressure, or floating, with risk rising from sleep deprivation, irregular schedules, stress, and some sleep disorders. There are several factors to consider. See complete details below. Get evaluated if episodes are frequent or disabling, you have severe anxiety about sleep, excessive daytime sleepiness or sudden muscle weakness, hallucinations when fully awake, or symptoms of sleep apnea; seek urgent care for severe breathing difficulty, chest pain, or overwhelming distress.

There are several factors to consider. Feeling tired after 8 hours often comes from sleep quality issues, misaligned sleep timing, or health problems like sleep apnea, anemia, thyroid disorders, or medication effects; see below for specific signs and how to tell which applies to you. Start by optimizing your sleep environment and schedule, tracking with the PSQI and aligning to your chronotype, then seek care if fatigue persists 2 to 4 weeks or if red flags like loud snoring, gasping, unexplained weight change, chest pain, or major mood shifts occur; full next steps and decision points are detailed below.

Falling asleep while upright is not normal tiredness and can signal serious conditions, from sleep disorders like narcolepsy or sleep apnea to medical and neurologic problems such as diabetes, hypothyroidism, heart failure, depression, seizures, Parkinson’s, and in those with liver disease, hepatic encephalopathy due to toxin buildup. There are several factors to consider, including urgent red flags and treatment steps that could change what you do next in your care; see the complete guidance below, including when to seek care and therapies for hepatic encephalopathy like lactulose and rifaximin.

People often ignore early signs like mild rectal bleeding, frequent urgent bowel movements, persistent diarrhea, cramping, unexplained fatigue, and gradual weight loss, sometimes along with joint, skin, or eye inflammation. There are several factors to consider, including red-flag symptoms such as escalating bloody diarrhea, severe abdominal pain, fever, dehydration, or anemia that need urgent care. See below for full details, what to do next, and how to talk to your doctor.

Vivid dreams right as you fall asleep usually mean REM sleep is arriving unusually early, signaling a shift in sleep architecture from causes like sleep deprivation or REM rebound, stress, circadian disruption, medications or alcohol, and less commonly narcolepsy or other medical issues. This is often harmless, but if you also have severe daytime sleepiness, cataplexy, frequent sleep paralysis or hallucinations, or mood and memory changes, talk to a doctor; consistent sleep habits, limiting caffeine and alcohol, managing stress, and medication review can help, and more specific next steps are outlined below.

There are several factors to consider. All-day sleepiness most often stems from poor sleep habits or sleep disorders such as obstructive sleep apnea or insomnia, but medical conditions like hypothyroidism, anemia or diabetes, mental health issues, certain medications or substances, and lifestyle choices can also play a role. See below for a step-by-step guide to evaluating your symptoms with tools like the Epworth Sleepiness Scale and a sleep diary, what tests and sleep studies might be needed, urgent red flags, and evidence-based treatments and self-care so you can choose the right next steps.

There are several factors to consider; see below to understand more. Feeling worse after a nap is usually due to sleep inertia from waking during deep sleep and from nap timing or length, with brief 10 to 20 minute naps in the early afternoon typically helping more than 30 to 60 minute or late-day naps. If even short, well-timed naps leave you unrefreshed, a sleep disorder such as obstructive sleep apnea, insomnia, or narcolepsy could be involved, and the details below include specific nap strategies and warning signs that indicate you should talk to a clinician.

There are two key patterns to consider. Full awareness with a brief whole‑body freeze lasting seconds usually points to benign sleep paralysis, while confusion, one‑sided weakness, or risks like cirrhosis or low potassium suggest urgent issues such as stroke, hepatic encephalopathy, or hypokalemic periodic paralysis. Triggers and next steps differ, from improving sleep habits to calling emergency services or checking potassium depending on the pattern. See below for important details, red flags, and guidance that could change what you do next.

Go to the ER now if you have heavy or frequent bleeding or clots, severe abdominal pain, fever of 101 F or higher, signs of dehydration, dizziness or fainting, confusion, a rapid heartbeat or low blood pressure, you are pregnant or immunocompromised, have major conditions like heart, kidney, or liver disease, or you have a sudden severe IBD flare. If symptoms are mild, with fewer than 3 bloody stools a day, no or low grade fever, and you can drink and urinate, you can monitor closely, hydrate, and see a doctor within 24 to 48 hours. There are several factors to consider, and key causes, red flags, safe home care, and what to expect in the ER are explained below.

Doctors take persistent diarrhea seriously when key red flags are present: blood or pus, high fever, severe abdominal pain, signs of dehydration, unintentional weight loss, symptoms lasting more than 48 hours, recent antibiotics or travel, older age, or immunocompromise; see below for the full list and what to do next. These signs may point to infections like C. difficile, inflammatory bowel disease, malabsorption, or dangerous complications such as severe dehydration or acute kidney injury, so seek urgent care if any occur. There are several factors to consider, and the detailed guidance below explains self-care, when to see a doctor, and the tests doctors use.

There are several factors to consider. Chronic diarrhea lasting 4 or more weeks can reflect true gut inflammation rather than a sensitive gut, often from inflammatory bowel disease, microscopic colitis, or bile acid malabsorption; see below for specifics that could change your next steps. Red flags and tests that help distinguish causes include blood in stool, weight loss, anemia or fever, fecal calprotectin or lactoferrin and, if elevated, colonoscopy with biopsies, with treatments that differ from IBS such as anti-inflammatory drugs, bile acid binders and targeted nutrition; find the full checklist and when to seek urgent care below.