Dystonia

Etiology

Focal torsion dystonia, eg, blepharospasm, torticollis, oromandibular dystonia, writer's cramp
Idiopathic torsion dystonia
Perinatal anoxia or birth trauma
Kernicterus
Wilson's disease
Huntington's disease
Parkinsonism
Encephalitis lethargica
Drugs, eg, antipsychotics
Tetanus

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