Excessive daytime sleepiness (EDS) is the main symptom and is present in 100% of patients with narcolepsy. Narcolepsy is a sleep disorder that causes overwhelming and severe daytime sleepiness that often occurs at inappropriate times and places, even after adequate nighttime sleep. The other primary symptoms of narcolepsy include loss of muscle tone (cataplexy), distorted perceptions (hypnagogic hallucinations), and inability to move or talk (sleep paralysis). Narcolepsy begins (has its onset) usually in teenagers or young adults and affects both sexes equally. People suffer from headaches which are reportedly migraine and also are at risk for obesity compared to general population.

Approximately 50% of adults with narcolepsy retrospectively report symptoms beginning in their teenage years.
All of the symptoms of narcolepsy may be present in various combinations and degrees of severity. The first symptom to appear is EDS, which may remain unrecognized for a long time in that it develops gradually over time. Other factors-such as infection, trauma, hormonal changes, immune-system dysfunction, and stress may also be present before the disease develops. People who develop it in the younger age group often have a family history of the disease and a severe condition, suggesting that genetic factors are important in this group.

The problems may be due to the abnormalities in the brain that cause the narcolepsy itself. The patient suffers emotional and social difficulties from the uncontrollable sleep events and cataplexy.

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Comments What are the four symptoms of narcolepsy

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