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Dyssomnias are a broad classification of sleeping disorders involving difficulty getting to sleep, remaining asleep, or of excessive sleepiness.

Dyssomnias are primary disorders of initiating or maintaining sleep or of excessive sleepiness and are characterized by a disturbance in the amount, quality, or timing of sleep.

Patients may complain of difficulty getting to sleep or staying asleep, intermittent wakefulness during the night, early morning awakening, or combinations of any of these. Transient episodes are usually of little significance. Stress, caffeine, physical discomfort, daytime napping, and early bedtimes are common factors.


There are over 31 recognized kinds of dyssomnias. The major three groups, along with the group types, include[1]:15:

Intrinsic sleep disorders[1]:15

See also


  1. 1.0 1.1 1.2 1.3

Portions of content adapted from Wikipedias article on Dyssomnia licensed under GNU FDL.

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  1. REDIRECT Template:Mental and behavioral disorders

Template:CNS diseases of the nervous system

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