Unusual focal dyskinesia: the ears and abdomen

J Korean Neurol Assoc > Volume 16(5); 1998 > Article

Journal of the Korean Neurological Association 1998;16(5): 706-708.

귀와 복부에 국한된 초점성 이상운동증*

김종열, 김지언*·백봉수·홍찬·박성파·서정규

경북대학교 의과대학 신경과학교실·계명대학교 의과대학 신경과학교실*

Unusual focal dyskinesia: the ears and abdomen

Jong Yeol Kim, M.D., Ji Eun Kim, M.D.*, Bong Soo Baek, M.D., Chan Hong, M.D. Sung Pa Park, M.D., Chung Kyu Suh, M.D.

Department of Neurology, School of Medicine, Kyungpook National University Department of Neurology, School of Medicine, Keimyung University*

Abstract

Background: Focal or segmental dystonic syndromes affecting cranial or upper limb muscles are well recognized. Restricted dystonic movements affecting axial muscle group are less common. Restricted involuntary movements of body parts such as ear and trunk which are not normally affected in isolation by movement disorders have been reported. Despite their unusual locations, the clinical and neurophysiologic characteristics of the movements were similar to dystonia and they were classified as focal dystonia. Case: We report four patients who have focal dyskinesia affecting ear and abdomen. In two patients, dyskinesia affecting the ear developed after head or facial trauma and in the other two cases, dyskinesia affecting the abdomen occurred after surgical operation. The unusual locations and appearance distinguish these dyskinesias from recognized movement disorder syndromes.
Conclusion: The characteristic features of these dyskinesia led us to classify it as dystonia. We'd like to underline that dystonia can affect any part of the body and peripheral factors may play a role in pathogenesis of the dystonia. Key Word: dyskinesia, dystonia, trauma