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NEUROLOGY 1986;36:825
© 1986 American Academy of Neurology

Hyperkinetic mutism

Bilateral ballism and basal ganglia calcification

Steven Inbody, MD and Joseph Jankovic, MD

Department of Neurology, Baylor College of Medicine, Texas Medical Center, Houston, TX.

We studied a 70-year-old woman with a unique combination of hyperkinesia and mutism. These findings differed from akinetic mutism because there was continuous bilateral ballism and dystonia—hence the term "hyperkinetic mutism." CT demonstrated bilateral calcifications in the basal ganglia, and MRI indicated bilateral watershed infarcts. Different dopaminergic mechanisms may underlie the hyperkinesia and mutism.

Address correspondence and reprint requests to Dr. Jankovic, Department of Neurology, Baylor College of Medicine, The Neurosensory Building, 6501 Fannin, Houston, TX 77030.

Accepted for publication October 14, 1985.




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