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The four major signs and symptoms of narcolepsy are extreme daytime sleepiness, catalepsy while awake and alucynation and sleep paraliss during sleep.

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Abundance of  histamina brain cells in the hypothalamus, to the right in the case of a narcoleptic person, and to the left in the case of a healthy person.

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Narcolepsy can take as long as 10 to 15 years after the first sypmtoms appear before Narcolepsy is organizes and diagnosed.

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Narcolepsy is a sleep disorder characterized by excessive sleepiness.

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Narcolepsy  characterized by excessive sleepiness, sleep paralysis, hallucinations, and in some cases episodes of cataplexy (partial or total loss of muscle control, often triggered by a strong emotion such as laughter). Narcolepsy occurs equally in men and women and is thought to affect roughly 1 in 2,000 people. The symptoms appear in childhood or adolescence, but many people have symptoms of narcolepsy for years before getting a proper diagnosis.