Sleep Terrors.

Sleep terrors, categorized under disorders of arousal, more prevalent in pediatric population, generally are self-limited but sometimes can persist or occur in adulthood. These are primed by factors enhancing homeostatic drive on backdrop of developmental predisposition and are precipitated by factors increasing sleep fragmentation resulting in dissociated state of sleep with some cerebral regions showing abnormal slow wave activity and others fast activity. This phenotypically evolves into abrupt partial arousal with individual arousing from N3 or N2 sleep with behaviors representing intense fear such as crying with autonomic hyperactivity. There is no recollection of the event, and lack of vivid dream mentation although fragmented imagery may be noted. Behavioral management is of prime importance including addressing precipitating factors, family reassurance, safety measures, and scheduled awakenings. Pharmacologic agents such as clonazepam and antidepressants are used infrequently in case of disruptive episodes.