Sleep disorder

Sleep disorder

The disturbance of normal sleep patterns caused by a broad range of illnesses, including dysfunctional sleep mechanisms, abnormalities in physiological functions during sleep, abnormalities of the biological clock, and sleep disturbances that are induced by factors extrinsic to the sleep process.

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Sleep disorder

diurnal

Health care; Sleep disorder

Active or occurring during the daytime; repeating once each 24 hours. The term is often used to describe the behavior of animals and plants that are active in the daytime.

sleep deprivation

Health care; Sleep disorder

Acute or chronic lack of sufficient sleep.

circadian disruption

Health care; Sleep disorder

Also called circadian disturbance, a departure of the body's circadian cycle from the environment or habit. Results in a change in the time of day during which sleepiness and wakefullness happen. ...

initial insomnia

Health care; Sleep disorder

Also called sleep-onset insomnia, it’s a symptom of someone having trouble falling asleep.

deep sleep

Health care; Sleep disorder

Also called slow-wave sleep (SWS), it refers to combined non-rapid eye movement sleep stages 3 and 4 (under the old definition of stages. Under the new classification, just stage 3).

night terrors

Health care; Sleep disorder

Also known as sleep terrors, or pavor nocturnus. Incomplete arousal from slow wave sleep accompanied by a state of intense fear and agitation. Experienced, especially by children, on awakening from a ...

gamma-aminobutyric acid (GABA)

Health care; Sleep disorder

An amino acid neurotransmitter (C 4 H 9 NO 2 ) in the brain. Believed to be involved in muscle relaxation, sleep, diminished emotional reaction and sedation.