About Narcolepsy and its symptoms

Narcolepsy is a chronic sleep disorder characterized by excessive sleepiness accompanied by a series of auxiliary symptoms, typically beginning in adolescence or young adulthood. Narcolepsy is believed to be caused by a deficiency of the brain chemical orexin A and B (also known as hypocretin 1 and 2). 90 % of patients that have narcolepsy with associated cataplexy have little or no orexin in the fluid that surrounds the brain and spinal cord (cerebrospinal fluid).

Narcolepsy is typically characterized by the following four symptoms with varying frequencies:

Excessive daytime sleepiness

Cataplexy which involves sudden and temporary loss of muscle tone often triggered by emotions such as laughter.


Sleep paralysis

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