Adult Headbanging: Sleep Studies and Treatment

Abstract

Headbanging is a rhythmic movement disorder (RMD) along with headrolling, bodyrocking and bodyrolling. The International Classification of Sleep Disorders defines RMD as a group of stereotyped, repetitive movements involving large muscles, usually of the head and neck, that typically occur immediately prior to sleep onset and are sustained into light sleep. The average onset is 9 months, and by 10 years of age the majority of subjects no longer complain of headbanging. If it continues, it is usually associated with mental retardation of autism. Headbanging is said to occur during presleep drowsiness or early non-rapid eye movement sleep. Often there is no need for treatment other than reassurance. Behavior modification has had little success. Benzodiazepines (such as oxazepam and diazepam) and tricyclic antidepressants have been used with variable success. We present two cases of headbanging with polysomnographic findings and treatment. The patients are two healthy adult males. They both experienced significant daytime somnolence and repeatedly wakened their partners. Only one of our patients had recorded head movements during his overnight sleep study. There was evidence of headbanging during stage 1 and stage 2 sleep but also during slow wave sleep. Headbanging was recorded during 14% of the epochs. Both patients responded to treatment with clonazepam (at a dose of 1.0 mg nightly) with decreased frequency and severity of headbanging. Although headbanging is most common in childhood, there may be significant number of cases that persist into adulthood. To our knowledge, this is the first report of the treatment of headbanging with clonazepam. Both patients benefited from this treatment.

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