Cataplexy, sleep paralysis, and hypnagogic hallucinations are all common symptoms of a sleep disorder called:

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Cataplexy, sleep paralysis, and hypnagogic hallucinations are all symptoms of narcolepsy, a sleep disorder characterized by excessive daytime sleepiness and sudden bouts of sleep. Sleep terrors refer to a different sleep disorder, while insomnia and REM sleep behavior disorder have different sets of symptoms.

Cataplexy, Sleep Paralysis, and Hypnagogic Hallucinations Are All Common Symptoms