Health Conditions and Sleep
Explore how illness, symptoms, neurological conditions, hormones, digestion, hydration, and other health issues affect sleep.
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Chronic and neurological conditions
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ME/CFS
Learn how ME/CFS is recognized, why post-exertional malaise matters, and how individualized care can reduce avoidable symptom worsening. → 02Multiple Sclerosis and Sleep
MS fatigue and sleepiness are not the same. Learn how symptoms, insomnia, sleep apnea, restless legs, medicines, and relapse concerns fit into a cause-led sleep plan. → 03Epilepsy and Sleep
Learn how epilepsy, seizures, sleep disorders, and medication interact, plus practical steps for evaluating nighttime events, protecting sleep, and responding safely. → 04Nocturnal Seizures
Learn how nocturnal seizures can appear, which sleep events resemble them, how testing works, and when seizure first aid or emergency care is needed. → 05Chiari Malformation
Learn what a Chiari malformation on MRI means, which symptoms fit Chiari I, and how specialists decide between observation and surgery. → 06Smith-Magenis Syndrome and Sleep
Learn how Smith-Magenis syndrome affects sleep timing, what else can disrupt sleep, and how families can plan assessment, treatment, school support, and nighttime sa... →Hormones, sex, and body changes
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Sleep and Testosterone
Learn what human evidence shows about sleep loss, sleep apnea, shift work, testosterone testing, fertility, and treatment safety. → 02Thyroid Issues and Sleep
Thyroid dysfunction can overlap with insomnia, fatigue, and sleepiness, but diagnosis requires clinical context and thyroid testing, and separate sleep disorders may... → 03How Sleep Differs for Men and Women
Learn what research shows about sex- and gender-associated differences in sleep need, timing, life stages, and sleep disorders without treating group averages as rules. →Night symptoms
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What Causes Night Sweats?
Learn what counts as true night sweats, how common and serious causes differ, what history guides selective testing, and when drenching episodes need routine or urge... → 02Night Sweats
Learn what recurrent night sweats can mean, which clues help narrow the cause, and when to seek medical care. → 03Night Sweats in Women
Learn how reproductive changes, medicines, metabolic conditions, infection, and sleep apnea can cause night sweats, plus which treatments and warning signs matter. → 04Nosebleeds While Sleeping
Learn how to stop a nosebleed noticed during sleep, what can cause recurrent nighttime nosebleeds, and when bleeding needs urgent medical care. → 05Waking Up With a Dry Throat
Learn why your throat may feel dry on waking, how to check likely causes safely, and when persistent dryness or breathing and swallowing symptoms need care. → 06Blocked Nose at Night
Learn what can safely ease a blocked nose tonight, how cause changes the right treatment, and which breathing, trauma, sinus, pregnancy, child, and PAP-related sympt... → 07Can a Lack of Sleep Cause Nausea?
Lack of sleep can contribute to nausea, especially after prolonged wakefulness, but other causes and warning signs should not be overlooked. → 08Nocturia
Learn why you may wake to urinate at night, how a bladder diary separates the possible causes, and which treatments and warning signs matter. → 09Numbness in Hands While Sleeping
Learn what nighttime hand numbness may mean, what you can safely try, and when sudden symptoms need urgent care. → 10Vertigo While Sleeping
Learn why lying down or rolling over can trigger vertigo, how BPPV is identified and treated, and which dizziness patterns need urgent care. →Digestive, hydration, and sensory issues
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GERD and Sleep
Learn why reflux can be harder to clear at night, what may help, how reflux medicines differ, and when nighttime symptoms need medical assessment. → 02Hydration and Sleep
Learn what research says about hydration and sleep, how to avoid bedtime fluid overload, and when thirst, dry mouth, or nighttime urination needs medical attention. → 03How to Sleep With Tinnitus
Use low-level sound safely, protect your sleep routine, and know which tinnitus changes need prompt medical care. → 04Anemia and Sleep
Anemia can cause fatigue and indirectly disturb sleep, but a CBC and cause-directed testing are needed before treatment, and persistent sleepiness may need a separat... →Safety and urgent questions
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Can You Sleep After Hitting Your Head?
Learn when sleep is safe after a head impact, which signs require emergency care, and how to follow a clinician-approved first-night monitoring plan. → 02Is It Safe to Sleep with a Concussion?
Learn when sleep is safe after a concussion, how to monitor an adult or child, and which warning signs need emergency care. → 03Why You Shouldn’t Sleep in Contact Lenses
Sleeping in contacts raises infection and inflammation risk. Learn which lens labels permit overnight wear, what to do after an accident, and when to get urgent care. →Equity and broad health context
More guides
Additional guides in Health Conditions and Sleep.
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