Sleep
Learning Center
Brain AVM (arteriovenous malformation)
Tangled blood vessels in the brain affect typical blood flow in this rare condition. Learn more.
How many hours of sleep are enough?
Wonder how many hours of sleep are enough? A Mayo Clinic specialist offers guidelines.
Keratoconus
When your cornea bulges outward, it can cause blurry vision and make your eyes sensitive to light. Find out about symptoms, causes and treatment for this eye condition.
Mayo Clinic Minute: Sleep Spoiler - Tips for a Good Night's Rest
Follow these tips for a good night's sleep.
Melatonin side effects: What are the risks?
Melatonin is generally safe for short-term use but can cause side effects.
Napping: Do's and don'ts for healthy adults
Napping can benefit your health. Find out how to make the most of a nap.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Sleep aids: Could antihistamines help me sleep?
Antihistamines can be somewhat effective as a sleep aid — but only for occasional sleeplessness.
Sleep aids: Understand options sold without a prescription
Get the facts on common sleep aids sold without a prescription, including precautions and side effects.
Sleep tips: 6 steps to better sleep
Better sleep can be yours! Consider sleep tips for the weary.