Disease or Syndrome
hypersomnia
[ hahy-per-som-nee-uh ]
Definitions related to hypersomnia:
  • A sleep disorder characterized by excessive sleepiness.
    NCI
    U.S. National Cancer Institute, 2021
  • Excessive or prolonged sleep.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • Excessive time spent a sleep. May be associated with underlying medical or psychiatric disorder or narcolepsy, may be part of the Kleine-Levin syndrome or may be primary.
    Sadock's Comprehensive Glossary of Psychiatry and Psychology
    BJ Sadock Titles Press, 2012
  • A disorder characterized by characterized by excessive sleepiness during the daytime.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.