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KMID : 0359719960140030861
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Journal of the Korean Neurological Association
1996 Volume.14 No. 3 p.861 ~ p.867
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Causalgia-dystonia Syndrome
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Abstract
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Most movement disorders are caused by the dysfunction of central nervous system, but sometimes involuntary movements may occur as a consequence of peripheral trauma. Patients with hemifacial spasm, segmental myoclonus, edentulous orodyskinesias,
amputation stump dyskinesias, tremor and dystonia after peripheral trauma have been reported. Limb dystonia following peripheral trauma has received much renewed interest in recent in recent years. In some patients with limb dystonia associated
with
peripheral trauma, causalgia or reflex sympathetic dystrophy (RSD) can be accompanied. We report a 70 year-old man who developed painful dystonic muscle spasms in the right hand after a severe injury to the right forearm. Burning pain and signs
of
sympathetic overactivity were accompanied. Electrophysiologic study showed a complete lesion of the right median nerve. A thermography study revealed decreased head emission in the right forearm. It has been speculated that injury to the
peripheral
nerve may cause changes in the spinal cord or cerebral synaptic mechanisms which lead to clinical syndrome of causalgia and dystonia. Conversion reaction and malingering also have been suggested as a plausible cause of syndrome of posttraumatic
dystonia.
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