Narcolepsy
What is Narcolepsy?

Symptoms of Narcolepsy
Excessive Daytime Sleepiness is exactly what it sounds like, being excessively tired regardless of how much sleep you've gotten.
Cataplexy is sudden muscle weakness and loss of voluntary muscle control. This can often times be brought on by strong emotions making it a difficult to deal with.
Sleep paralysis, hallucinations, fragmented sleep, insomnia, and automatic behaviors are also signs of narcolepsy.
Causes
When cataplexy is present it is almost always connected to extremely low levels of hypocretin. Hypocretin is a chemical that naturally occurs and promotes our feelings of wakefulness and regulars REM sleep. In cases without cataplexy, these levels are usually normal, however. What actually causes narcolepsy is not totally understood but autoimmune disorders, genetics, and in some rare cases brain injuries can be factors that lead to it.
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