The aim of this report was to describe the Focal dystonia in Musicians. Musician´s dystonia is a disorder characterized by abnormal movements, with excessive activation of muscular antagonists or co-contraction of antagonist muscles that are not required for a specific movement. Belongs to the group of occupational dystonias ; is a specific disorder of a determinated task in musicians, that include the absence of voluntary control of movements detailed determinated in the ejecution of an instrument, and manifiests itself by the deteriorization of his dexterity in the ejecution. Dystonia, including all his forms, is the third more frequent pathology of abnormal movements, after Parkinson´s disease and the essential trembling. Musician´s dystonia is a task-specific movement that manifiests itself as a loss of voluntary motor control in extensively trained movements. Approximately 1 % of all professional musicians develop musician´s dystrofia, and in many cases the disorder terminates the careers of affected musicians. Several theories have been referred related to the etiology. The aim of this report was to present the author´s casuistic of Focal dystonia in musicians in Argentina, considering the type of instrument, which kind of music is ejecuted –classic or popular- and to inform the treatment proposed and the results obtained.