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Segment 1: Abnormal flexion of the patient’s right thumb is observed, and he has difficulty in extending and flexing his right thumb voluntarily. This abnormal flexion posture becomes prominent when using the computer mouse. He cannot move the mouse smoothly. His handwriting is normal.Segment 2: When on medication (clonazepam and trihexyphenidyl), abnormal flexion of his right thumb is markedly improved. His right thumb does not become flexed while he is moving the computer mouse.
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Suzuki, K., Takano, M., Hashimoto, K. et al. Computer mouse-related dystonia: a novel presentation of task-specific dystonia. J Neurol 259, 2221–2222 (2012) doi:10.1007/s00415-012-6519-1
- Computer Mouse
- Dystonic Posturing
- Sensory Trick