Sleep apnea is a common sleep disorder. When a person has sleep apnea, he or she stops breathing for short periods of time. In most cases this lasts from 10 seconds to 1 minute or more while asleep. Then the person begins breathing again. A person may stop breathing only a few times or hundreds of times in the course of the night.
Narcolepsy is a chronic sleep disorder that causes excessive, overwhelming daytime sleepiness. A person often falls asleep suddenly many times a day.
This condition results when a person has trouble falling asleep or staying asleep night after night.
Restless Leg Syndrome
Restless leg syndrome involves unusual sensations in the legs that cause frequent leg movements. People often experience "crawling" sensations in their legs whenever they lie down to sleep.
Periodic Limb Movement Disorder
This condition involves repeated jerks of the arms or legs during sleep.
Sleepwalking is a sleep disorder in which an individual performs actions usually associated with wakefulness, while asleep. Often this is walking, but other detailed activities may be performed.