Not true about narcolepsy: (A) Sudden sleep attack, (B) Long duration (>3 hrs) of sleep, (C) Cataplexy, (D) Presents in 2nd decade
Answer is B. Classic form of Narcolepsy is characterised by Tetrad of symptoms- excessive day time sleepiness, cataplexsy, sleep paralysis and hypnogogic hallucinations. Sleep attacks leads to 10 to 20 minutes of sleep, after which patient feels refreshed, at least briefly. Ref: Synopsis of Psychiatry, 11e, pg 547.