Ballistic Movements and Psychotic Symptoms due to Methadone Use: A Letter to the Editor

Despite a convincing concordance between choreic signs and neuroradiological findings was possible in four patients only, it was possible to assign an etiology, in most cases, with vascular related causes, as the most frequent metabolic factors of movement disorders. huntington’s disease (hd) is not unusual, as a cause of sporadic choreas. the hiv infection is an emerging cause of chorea and aids-related disease should be considered, in young patients presenting without a family history of movement disorders. we emphasize the importance of follow-up to identify persistent chorea, for which genetic testing is mandatory. sporadic chorea has multiple etiologies. the hd is a more common presentation compared to others. the hiv infection (specially, no family history of movement disorders in younger), vascular causes and drugs are not common.