What is a feature of narcolepsy-
Insomnia
Hypersomnia at day time
Bimism
Somnambulism
Ans. is 'b' i.e., Hypersomnia at day time Narcolepsyo This is characterized by excessive day time sleepy often disturbed night time steep and disturbances in the REM sleep. Age of onset is between 10-20 years. There is irresistable desire to sleep and bouts of sudden sleep each Lasting for 10-30 minutes occuring during day time. In majority of cases narcolepsy is associated with one or more accessory symptoms :-Cataplexy It is the most common accessory symptom and is characterized by sudden decrease in muscle tone either, local or generalized.Hypnagogic hallucination :- Hallucination occuring just before falling asleep. When hallucination occurs just before awakening it is called hyponopompic hallucinations.Sleep paralysis (least common).
Sleep-Wake Disorders