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1 Definition

A sleep disorder is a disorder in the sleep patterns of a person or animal. Some sleep disorders can interfere with mental and emotional function, due to their interference with REM sleep.

2 Common sleep disorders

The most common sleep disorders include:

• Bruxism: The sufferer involuntarily grinds his or her teeth while sleeping
• Delayed sleep phase syndrome (DSPS): a sleep disorder of circadian rhythm
• Insomnia: Inability to fall asleep at will or at normal times
• Jet lag or desynchronosis: Temporary condition resulting in out of sync sleep patterns as a result of rapidly travelling across multiple time zones
• Narcolepsy: The condition of falling asleep spontaneously and unwillfully
• Night terror or Pavor nocturnus or sleep terror disorder: abrupt awakening from sleep with behavior consistent with terror
• Parasomnias: Include a variety of disruptive sleep-related events
• Periodic limb movement disorder (PLMD): Involuntary movement of arms and/or legs during sleep
• Rapid eye movement behavior disorder (RBD): Acting out violent or dramatic dreams while in REM sleep
• Restless legs syndrome (RLS): An irresistible urge to move legs while sleeping. Often accompanies PLMD.
• Sleep apneaSleep apnea (alternatively sleep apnoea is a sleep disorder in which breathing is interrupted during sleep. It is a kind of dyssomnia. Obstructive sleep apnea (OSA) Most people with sleep apnea have obstructive apnea, in which the person stops breathing d: The obstruction of the airway during sleep
• Sleep paralysisSleep paralysis is a term either used to describe the normal paralysis of the body that occurs during REM sleep, or the disorder in which awareness is maintained when the body becomes paralysed when entering sleep (known as hypnogogic paralysis) or remain: Conscious paralysis upon waking or falling asleep
• SleepwalkingSleepwalking or somnambulism is a sleep disorder where the sufferer engages in activities that are normally associated with wakefulness while asleep. While it is more common in children (1-17%) of children, more frequent in boys), sleepwalking can affect or somnambulism: Engaging in activities that are normally associated with wakefulness (such as eatingEating is the activity of consuming food and its digestion. Among human beings, eating is a central part of home life and many social activities. The preparation and consumption of food also has many cultural components, and plays an important role in all or dressingSee also List of types of clothing Introduction Humans often wear articles of clothing (also known as dress garments or attire on the body (for the alternative, see nudity). In its broadest sense, clothing includes coverings for the trunk and limbs as wel), which may include walkingWalking is the main form of animal locomotion on land, distinguished from running and crawling. When executed in shallow water, it is usually described as wading . The word is derived from the Old English walcan (to roll). Walking is generally distinguish, without the conscious knowledge of the subject
• SnoringSnoring is the act of breathing through the open mouth in such a way as to cause a vibration of the uvula and soft palate, thus giving rise to a sound which may vary from a soft noise to a loud unpleasant sound. This most commonly occurs during sleep.: Loud breathing patterns while sleeping, sometimes accompanying sleep apnea