Four cases of torsion dystonia of the spasmodic torticollis type associated to Parkinson's syndrome are reported. All the patients were female and the ages at the begining of the parkinsonism and the dystonic syndrome varied respectively from 12 to 40 and from 18 to 40 years. In just one patient the dystonia preceded the parkinsonism. The Parkinson's syndrome was predominantly unilateral and hypertonic. The encephalitic etiology was suggested in all the cases.