How to tell if i have sleep paralysis?

Sleep study: Sleep paralysis has been linked to narcolepsy and sleep apnea and may be worsened by things that prevent you from having a good sleep, including insomnia, sleep deprivation, an erratic sleep schedule, stress, overuse of stimulants, physical fatigue, as well as certain medications that are used to treat attention deficit disorder. I would ask for a sleep study to evaluate this .