1 Departments of Neurology and Pediatrics, Upstate Medical Center SUNY, Syracuse, New York
Carbamazepine is an anticonvulsant most effective in treating complex partial and generalized tonicclonic seizures. We have cared for three children in whom four episodes of dystonia proceeding to opisthotonus occurred in association with carbamazepine use. The patients, a 4-year-old with microcephalv and severe retardation, a 1-year-old with cerebral dvsgenesis, and a 5-year-old with spastic quadriplegia and mild retardation, all had seizures unresponsive to multiple anticonvulsant combinations. In all three patients carbamazepine was introduced and gradually increased to a maximum dosage of 25 mg/kg of body weight per day. Dvstonic symptoms began two to three weeks after introduction of therapy and subsided within three weeks after discontinuation. In one child, a second course of carbamazepine resulted in a return of the dystonia. The currently available clinical and neuropharmacologic data suggest that carbamazepine may be an antagonist of dopamine and that this property is responsible for the production of dystonia.
Submitted on May 11, 1978
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