<prompt> hypnopompic hallucination isIf experienced while falling asleepIf experienced while awakeningAfter head traumaAfter convulsion  <response>: HPNOPOMPIC HALLUCINATION Hallucination while the person wakes up from sleep NARCOLEPSY Cataplexy loss of muscle tone Hynogogic hallucination Hynopompic hallucination Sleep paralysis Excessive day time sleepiness Strong emotions can trigger cataplexy ETIOLOGYHYPOCRETIN DEFICIENCY in LATERAL HPOTHALAMUS TREATMENTMODAFINIL AND psychostimulants MOST REPEATED ONW WORD NARCOLEPSY HAS CATAPLEXY sudden loss of tone and falls to sleep CATATONIA HAS CATALEPSY abnormal postures Ref.kaplon and sadock, synopsis of pzychiatry, 11th edition, pg no.536 