5. Narcolepsy
People who are suffering from narcolepsy are more likely to experience sleep paralysis. The sleep paralysis, hallucinations, cataplexy and oversleeping are all contributing factors to narcolepsy.
Those who are suffering from narcolepsy can immediately sleep during usual activities and wake up suddenly, which may cause sleep paralysis.
The narcolepsy also increases the chance of sleep paralysis at night which can be disconcerting, to say the least.