What is "parasomnia"

n. (context medicine English) Any of several sleep disorders

'''Parasomnias ''' are a category of sleep disorders that involve abnormal movements, behaviors, emotions, perceptions, and dreams that occur while falling asleep, sleeping, between sleep stages, or during arousal from sleep. Most parasomnias are dissociated sleep states which are partial arousals during the transitions between wakefulness and NREM sleep, or wakefulness and REM sleep.

Parasomnia is an independent horror film directed by William Malone and stars Jeffrey Combs, Timothy Bottoms and Dylan Purcell. The filming was funded by Malone himself, and its release was delayed due to difficulties securing distribution.