Narcolepsy

**Definition:** A condition characterized by recurrent episodes of daytime somnolence and lapses in consciousness (microsomnias) that may be associated with automatic behaviors and AMNESIA. CATAPLEXY; SLEEP PARALYSIS, and hypnagogic HALLUCINATIONS frequently accompany narcolepsy. The pathophysiology of this disorder includes sleep-onset rapid eye movement (REM) sleep, which normally follows stage III or IV sleep. (From Neurology 1998 Feb;50(2 Suppl 1):S2-S7)

**Tree numbers:** - C10.886.425.800.200.750 - F03.870.400.800.200.750

**Synonyms:** - Gelineau Syndrome - Gelineau's Syndrome - Narcoleptic Syndrome - Paroxysmal Sleep