Carbamazepine‐induced non‐epileptic myoclonus and tic‐like movements

ABSTRACT Carbamazepine‐induced abnormal movements have been reported in children and adult patients, and both non‐epileptic myoclonus and tic‐like movements have been reported in the same patient. Although a pathogenetic mechanism underlying carbamazepine‐induced epileptic negative myoclonus has been proposed, a causative role of carbamazepine for positive myoclonus has not been fully identified. Here, we describe the video‐documented case of an adult patient with non‐epileptic myoclonus and tic‐like movements persisting for 21 years, which appeared after he started carbamazepine treatment at 10 years of age. [ Published with video‐sequences ]