[Dyskinesia in various diseases--cerebrovascular disease, head injury, brain tumor].

In the broad sense of the term, dyskinesia refers to the overall spectrum of abnormal involuntary movement. Abnormal involuntary movement includes parkinsonism, chorea, athetosis, myoclonus and ballism. Clinically, the most frequently encountered form of dyskinesia is parkinsonism. In addition to parkinsonism, typical forms of dyskinesia caused by cerebrovascular disease, head injury and brain tumor, based on a review of the literature and our own experience are discussed.