Sleep Disorders

From insomnia to narcolepsy, sleep disorders include any abnormality in a person's sleep patterns. Learn about the diagnosis and symptoms of sleep disorders, and find out how they can be treated.


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How Do You Sleep When Sailing Solo for 4,000 Miles?

Four weeks and 4,000 miles is a long time to get by on catnaps during a solo sailing race. So, researchers set out to find whether there was a sleep strategy that worked best.

Can You Fall Asleep With Your Eyes Open?

Or what about half open? It's more common than you might think.

Does Sleeping On Your Side Stop Snoring?

If you sleep with someone who snores, you may've read that you should wake them up and have them turn on their side to stop the problem. But does it work?

More Bad News for People With Insomnia

A new study just found the sleeping disorder could make you gain weight. Awesome.

Why Are You So Tired? 5 Most Common Sleep Mistakes

Do you have trouble falling asleep or staying asleep? We'll give you the most common reasons why you're tired and how to fix them.

Being a Night Owl Can Shorten Your Life

Not getting enough quality sleep can take a serious toll on your mental and physical well-being. It can also shorten your life.

Why Some People Can't Sleep Without a Fan

Are you one of those people who can't fall asleep without the sound of a fan? The reason may have something to do with your "sleep spindles."

Why Do People Fall Asleep in Movie Theaters?

Even if the film is full of blasting bombs and flashing lights, it might not be enough to stop some folks from nodding off.

Social Jet Lag May Be Bad for Your Heart

A new study links sleeping in on the weekends with an increased likelihood of heart disease.

How Fever Dreams Work

They're not hallucinations, but they're not just regular nightmares, either.

How Night Terrors Work

Don't worry, you'll grow out of it – unless you're among the tiny percent of adults who still experience horrific sleep visions. Learn all about night terrors at HowStuffWorks.

How Fatal Familial Insomnia Works

Insomnia can feel like torture, but can it be fatal? The answer is yes, but it's an incredibly rare neurodegenerative disease, normally passed down genetically.

How Sleep Deprivation Works

You know you're not yourself when you don't get enough sleep, but what really happens to your body when the sandman refuses to visit?

How Insomnia Works

Can't sleep? Tossing and turning? Join the crowd. Insomnia is all too common -- but what's keeping so many people from getting the rest they need?

Do you need sleep drugs?

For some people, medications or herbal supplements can be the answer to sleep problems — if you know the right one. This guide will help you and your doctor make the decision that's right for you.

Does sleep deprivation lead to risky decisions?

Research shows that when we've had too little sleep, our brain activity makes us overly optimistic, so we make some bad choices.

10 Signs You May Be Sleep Deprived

The statistics are alarming: According to the World Association of Sleep Medicine, about 45 percent of the world's population isn't getting enough sleep.

9 Most Common Sleep Disorders

Think you might have a sleep disorder? Learn more about the 9 most common sleep disorders.

Dangers of Sleep Apnea

Sleep apnea causes patients to actually stop breathing periodically throughout the night. Learn about the silent dangers of sleep apnea.

Causes of Insomnia

The causes of insomnia are as numerous as the forms it takes. Learn how to combat insomnia arising from medical conditions, jet lag and other causes.

Who Would Have Guessed I Had Sleep Apnea?

If you have sleep apnea, your doctor might recommend surgery to help you good a good night's rest. Learn more facts about sleep, solutions for a goodnight's sleep, and side effects of poor sleeping habits.

What Is Narcolepsy?

Narcolepsy causes sufferers to fall asleep unexpectedly. How does it work?