narcoleptic tetrad

nar·co·lep·tic tet·rad

the clinical syndrome of narcolepsy, cataplexy, sleep paralysis, and hypnagogic hallucinations.
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The 4 classic symptoms that define narcolepsy--EDS, cataplexy, sleep paralysis, and hypnagogic hallucinations--are sometimes called the "narcoleptic tetrad," (8,10,11) Cataplexy occurs in most cases of narcolepsy but is not common in other sleep disorders; its presence in combination with EDS is definitive for narcolepsy.