[Dystonia. Professional contingency in musicians. About a case].

Dystonia is a motor disorder that causes involuntary contractions of muscles through repeated movements. Wind and string players are particularly vulnerable to this disease, with orofacial and dominant upper limb involvement. Its origin is multifactorial, with ergonomic, psychosocial and organizational risks standing out as occupational risks. The Spanish legislation does not include musician's dystonia in the list of occupational diseases. The determination of contingency is complex in order to establish the principles of causality and temporality required by the Mutual Social Security Collaborators and by the National Institute of Social Security. The process frequently ends up in the Courts of Justice. Scientific evidence and jurisprudential doctrine provide documentary support that facilitates decision-making and opens the door to the future incorporation of musicians' dystonia into the list of occupational diseases in our country.