Narcolepsy

Narcolepsy is a sleep disorder. It happens when the nervous system does not work properly or if there is a hormonal imbalance. Mental health issues like depression and ADHD, and drug use can cause narcolepsy. This condition is categorised as excessive daytime sleepiness. Very often, a person with the condition does not sleep well at night, and during the day they fall asleep uncontrollably.

Narcolepsy affects the way the nerves work. It is not a mental illness, or caused by psychological problems[^source?]. It is estimated that between 25 and 50 people, per 100,000 suffer from narcolepsy. Very few cases are reported.

The first description was given in 1877. Jean-Baptiste Gélineau, a military doctor, first used the name narcolepsy in 1880.

In certain countries, people diagnosed with narcolepsy may not drive a car.