Treatable Dystonia Presenting as Spastic Cerebral Palsy
1 Developmental and Metabolic, Neurology Branch, NINCDS, NIH, Building 10, Rm 4N248, Bethesda, MD 20892
2 Office of the Clinical Director, NINCDS, NIH, Building 10, Rm 5N2, Bethesda, MD 20892
3 Division of Genetics, Childrens Hospital of Los Angeles, University of Southern California, Los Angeles, CA
To the Editor.
Cerebral palsy is a disorder with nonprogressive motor impairment that begins in early infancy and is characterized by spasticity or involuntary movements.1 It is classified according to the primary motor disturbance present (spastic, extrapyramidal, hypotonic, and mixed). Approximately 65% of patients with cerebral palsy have the spastic type.2 The term does not imply a specific cause. Prematurity, anoxia, infection, trauma, and metabolic or other pathologic processes may be responsible in individual patients.
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