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Causes, Incidence and Risk Factors

Narcolepsy is a sleep disorder that causes excessive sleepiness and frequent daytime sleep attacks.

Narcolepsy is a nervous system disorder. The exact cause is known.

In some patients, narcolepsy is linked to reduced amounts of a protein called hypocretin, which is made in the brain. What causes the brain to produce less of this protein is unclear.

There is a possibility that narcolepsy is an autoimmune disorder. An autoimmune disorder is when the body's immune system mistakenly attacks healthy tissue.

Narcolepsy tends to run in families. Certain genes are linked to narcolepsy.

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