what is sleep paralysis

Sleep paralysis is a temporary inability to move or speak that occurs directly after falling asleep or before waking up. During an episode of sleep paralysis, individuals maintain consciousness, but they are unable to move or speak. The paralysis may last from several seconds to several minutes, and it can be accompanied by hallucinations or a feeling of suffocation. Sleep paralysis is a normal part of the REM sleep, but it is considered a disorder when it occurs outside of REM sleep. The exact cause of sleep paralysis is not fully known, but it is linked to sleep disorders, certain mental health conditions, not getting enough sleep, having an irregular sleep schedule, mental stress, sleeping on your back, and the use of certain medicines or substances. Sleep paralysis is not usually a symptom of a serious problem, but it can be distressing and may provoke a panic response.