<unk> , or<unk>  was first described in 1986 as a parasomnia involving dissociation of the characteristic stages of sleep. The major and arguably only abnormal feature of<unk>  is loss of muscle atonia (paralysis) during otherwise intact REM sleep (the stage of sleep in which most vivid dreaming occurs). This loss of motor inhibition leads to a wide spectrum of<unk> ral release during sleep. This extends from simple limb twitches to more complex integrated<unk> s where sufferers appear to be unconsciously acting out their dreams. These<unk> rs are often violent in nature and commonly result in injury to either the patient or their bed partner. Injuries range from bruises and cuts to fractures, subdural hematoma and other serious injuries. In contrast, all other aspects of sleep appear similar to normal.
Rapid eye movement behavior disorder
Transient tic disorder
Attention-deficit hyperactivity disorder
Non-rapid eye movement sleep arousal disorder
Episodic dyscontrol syndrome
Chronic tic disorder
Autism spectrum disorder
Circadian rhythm sleep disorder