• Idiopathic hypersomnia is excessive daytime sleepiness with or without a long sleep time; it is differentiated from narcolepsy by lack of cataplexy, hypnagogic hallucinations, and sleep paralysis.
    (See also Approach to the Patient With a Sleep or Wakefulness Disorder.)
    Idiopathic hypersomnia is not well-characterized. Cause is presumed to be dysfunction of the central nervous system.
    Excessive daytime sleepiness is the main symptom; sleep time may or may not be prolonged.


    Idiopathic hypersomnia meaning & definition 1 of Idiopathic hypersomnia.

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