Circadian Rhythm Disorder Directory
Circadian rhythm disorders are disruptions in a person's circadian rhythm -- a name given to the "internal body clock" that regulates the (approximately) 24-hour cycle of biological processes in animals and plants. Circadian rhythms are important in determining human sleeping patterns. When your body clock gets off schedule -- as can occur when traveling, working the night shift, or taking certain medications -- problems may develop that affect sleep. Follow the links below to find WebMD's comprehensive coverage about circadian rhythm disorder, what causes it, how to treat it, and much more.
Learn more from WebMD about the signs and symptoms of insomnia.
Sleep, Travel, and Jet Lag
Travelling across time zones can mess with your body's clock. WebMD gives you tips on preventing jet lag and getting in sync with your new location.
10 Questions to Ask Your Doctor About Sleep Disorders
WebMD provides a list of 10 questions to ask your doctor about sleep disorders.
Basics on Sleep
WebMD explains the stages of sleep -- REM and non-REM -- and how age affects these cycles.
Time Changes Sleep
The daylight-saving time change affects your personal health, sleep habits, and lifestyle.
Coping with the Effects of Daylight Saving Time
time changes, whether from traveling or daylight-saving time, can greatly affect your restful sleep. Here's how to cope.
Sleepless in America
Wake up, America! Most of you are not getting enough sleep.
Ease Your Way to Daylight-Saving Time
Experts share tips for making a smoother transition to daylight-saving time.
Overcoming Insomnia: One Woman's Story
Is the stress of children, jobs, and daily life giving you insomnia? See how you can fix your poor sleep habits and get some rest!
Helping the Blind Re-set Their Body Clocks
For those who are blind, their body clocks tend to drift which can be devastating.
Daylight Savings Time and Sleep
Why are so many of us disoriented by the time change each year? Get tips on adjusting more quickly.
Are You a Night Owl?
Learn how to fall asleep before your second wind kicks in.
Slideshows & Images
Can't Sleep? It Could Be What You're Eating
Could a good night’s sleep come down to your diet? Discover which foods hinder sleep and which foods promote restful slumber.
12 Causes of Fatigue and How to Fight It
Always tired? WebMD examines causes and fixes for fatigue.
A Visual Guide to Sleep Disorders
Pictures show you the symptoms, causes, tests, and treatments for sleep problems.
What to Do Today to Sleep Better Tonight
See how to get better sleep with tips about diet, exercise, scheduling, and more.
Work and Sleep: Is Lack of Sleep Hurting Your Job Performance?
Sleep Quiz: Crazy Hours on the Job
Sleep Quiz: Is Sleepiness Hurting You?
Why You Need Your ZZZs Quiz
Take this quiz and test your knowledge of sleep -- deprivation, insomnia, and nightmares.