Narcolepsy is a neurological disorder that causes persistent sleepiness and additional symptoms such as brief episodes of muscle weakness known as , vivid, dreamlike hallucinations, brief episodes of paralysis when falling asleep or upon awakening (sleep paralysis), and fragmented nighttime sleep. Symptoms typically develop over several months and last a lifetime.
The disorder usually begins between ages 10 and 20, although sometimes it starts as late as age 40 or 50. Narcolepsy affects women and men equally, occurring in about 1 in 2,000 people.
Narcolepsy is a manageable condition, and with an array of treatment strategies, people with narcolepsy can live full and rewarding lives.