Mental or Behavioral Dysfunction
dyssomnias
Subclass of:
Sleep Wake Disorders
Definitions related to dyssomnias:
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A broad category of sleep disorders characterized by either hypersomnolence or insomnia. The three major subcategories include intrinsic (i.e., arising from within the body) (SLEEP DISORDERS, INTRINSIC), extrinsic (secondary to environmental conditions or various pathologic conditions), and disturbances of circadian rhythm. (From Thorpy, Sleep Disorders Medicine, 1994, p187)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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