Feature of narcolepsy include (s) all except:: (A) Disorder of REM sleep regulation, (B) Catalepsy, (C) Hypnagogic hallucination, (D) Hypnopompic hallucinations
Answer is B. Narcolepsy It is a disorder of REM sleep with reduced REM latency Clinical features- 4 major symptoms strong urge to fall asleep Hypnagogic and Hypnopompic hallucination Cataplexy Sleep paralysis Occurs due to deficiency of hypocretin . has strong association with HLA - DR2 Diagnosis-Polysomnography - reveals a characteristic sleep-onset REM period