Narcolepsy the French "narcolepsie". The French term was first used in 1880 by Jean-Baptiste-Édouard Gélineau, who used the Greek νάρκη ("narkē"), meaning "numbness", and λῆψις ("lepsis") meaning "attack". There are two main characteristics of narcolepsy: excessive daytime sleepiness and abnormal REM sleep. The first, excessive daytime sleepiness (EDS), occurs even after adequate night time sleep. A person with narcolepsy is likely to become drowsy or fall asleep, often at inappropriate times and places, or just be very tired throughout the day. Narcoleptics are not able to experience the amount of restorative deep sleep that healthy people experience – they are not
Night owl (person) Night owl (person) A night owl, evening person or simply owl, is a person who tends to stay up until late at night. In several countries, especially in Scandinavia, early birds are called "A-people" and night owls are called "B-people". Night owls who are involuntarily unable to fall asleep for several hours after a normal time may have delayed sleep phase syndrome. The opposite of a night owl is an early bird – a lark as opposed to an owl – which is someone who tends to begin sleeping at a time that is considered early and also wakes early.