Mental or Behavioral Dysfunction
primary hypersomnia
Definitions related to primary hypersomnia:
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Excessive daytime sleepiness with a central nervous system origin.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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(idiopathic hypersomnia) A disorder of central nervous system etiology characterized by excessive sleepiness during the daytime.NCI ThesaurusU.S. National Cancer Institute, 2021
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In 1966, William Dement proposed that patients with excessive daytime sleepiness, but without cataplexy, sleep paralysis, or sleep-onset rapid eye movement (REM), should not be considered narcoleptic. In 1972, Roth et al described a type of hypersomnia with sleep drunkenness that consists of difficulty coming to complete wakefulness,...WebMD, 2019
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