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 ...

Horsnell has other common signs of narcolepsy as well, including nightmares and visual and tactile hypnagogic hallucinations, which occur while a person is falling asleep. Typically manifesting as ...

I dedicated my last two columns to the assessment, diagnosis and treatment of narcolepsy. As a clinician, I know the signs of narcolepsy and the impact that narcolepsy can have on my patients and ...