Question: What is a nervous disorder whereby a person suddenly falls asleep?
Answer: Narcelepsy; Narcolepsie; Narcolepsy without cataplexy; Nacrolepsy; Hypnolepsy; Narcalepsy; Narcoleptic; Narcolepsy; Narcaleptic; Gelineau disease; Always sleeping (narcolepsy); Narcolepsy-Cataplexy; Paroxysmal sleep