dyssomnia

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dyssomnia

 [dis-som´ne-ah]
any of a group of primary sleep disorders characterized by disturbances in the quality, amount, or timing of sleep, including primary insomnia, primary hypersomnia, breathing-related sleep disorder, circadian rhythm sleep disorder, and narcolepsy. See also parasomnia.

dys·som·ni·a

(dis-som'nē-ă),
Disturbance of normal sleep or rhythm pattern.

dys·som·ni·a

(dis-som'nē-ă)
Disturbance of normal sleep or rhythm pattern.

Dyssomnia

A primary sleep disorder in which the patient suffers from changes in the quantity, quality, or timing of sleep.
Mentioned in: Sleep Disorders
References in periodicals archive ?
In 1990, sleep disorders were reclassified by the American Sleep Disorders Association into four major categories: dyssomnias, parasomnias, medical/psychiatric sleep disorders, and proposed sleep disorders.[19] Dyssomnias include disorders that may cause insomnia or excessive sleepiness, and are subclassified as intrinsic (eg, psychophysicological insomnia, narcolepsy, and restless legs syndrome), extrinsic (which includes transient and short-term insomnia), and circadian rhythm disorders (eg, jet lag syndrome and delayed sleep phase syndrome).