Narcolepsy can lead to excessive daytime sleepiness, as well as cataplexy, a sudden loss of muscle tone. Other symptoms can include sleep paralysis and hallucinations that occur both during sleep ...
Narcolepsy is caused by a deficiency of orexin, a brain chemical that regulates wakefulness and REM sleep. The MSLT and polysomnography are gold standards for diagnosing narcolepsy. Medications like ...