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Paroxysmal Kinesigenic Choreoathetosis and Abnormal Contingent Negative VariationA Case Report
Hessel Franssen, MD;
Cor Fortgens;
A. Rolf Wattendorff, MD;
Theo C. A. M. van Woerkom, MD
Arch Neurol. 1983;40(6):381-385.
Abstract
• We treated a patient suffering from paroxysmal kinesigenic choreoathetosis (PKC). The etiology and pathophysiologic mechanism of this rare movement disorder are unclear. Like other patients with PKC, our patient experienced attacks more frequently when making anticipated movements. Because anticipation plays an important role in the genesis of the contingent negative variation (CNV), we investigated the CNV in our patient. One of the components of the CNV, the slow negative wave (SNW), repeatedly showed a remarkable enhancement compared with that of controls. After institution of phenytoin sodium therapy, the attacks of PKC subsided and the SNW amplitude came within the range of control values. There may be a relationship between PKC and the abnormal CNV.
Author Affiliations
From the Department of Neurology, Municipal Hospital Leyenburg (Drs Franssen, Wattendorff, and van Woerkom) and the Department of Neuropsychiatry, Psychiatric Centre Rosenburg (Mr Fortgens, Drs Wattendorff and van Woerkom), The Hague, the Netherlands.
Footnotes
Accepted for publication July 14, 1982.
Reprint requests to Department of Neuropsychiatry, Psychiatric Centre Rosenburg, Oude Haagweg 377, 2552 GB The Hague, the Netherlands (Dr van Woerkom).
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