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Treatment of severe tardive dystonia with pallidal deep brain stimulation

In five patients with medically refractory tardive dystonia, continuous bilateral high-frequency stimulation of the globus pallidus internus was associated with a rapid (within 12 to 72 hours) and substantial (mean 87%, 10.7 SD of the motor part of the Burke–Fahn–Marsden Dystonia Rating Scale) improvement of dystonia and functional disability without adverse events.