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A 13-year-old boy previously diagnosed as having psychogenic movement disorder presented with a 2-year history of episodic dystonic movements involving all limbs and face. The episodes were precipitated by sudden movements, lasted for less than 30 s, occurring 5-6 times/day and were preceded by tingling sensations ( video 1 ). There was no history of any major medical or surgical illness. Family history was negative. Physical examination of the patient did not reveal any abnormality.
Video 1 Dystonic movements involving all limbs and face...