Dystonia is a syndrome characterized by sustained muscle contractions causing twisting or abnormal posturing. Secondary dystonia is well known subsequent to lesions of the basal ganglia , thalamus, or brainstem . Hemidystonia defined as involuntary, sustained posturing of the unilateral arm, leg, and face sometimes occurs following head trauma, with the cause ofthe contralateral basal ganglia or pontomesencephalic lesions. Dystonia is a syndrome characterized by sustained muscle contractions causing twisting or abnormal posturing.
Secondary dystonia is well known subsequent to lesions of the brain. A patient was a 50-year-old man, and he experienced traffic accident. He suffered bilateral hemiparesis by cervical vertebrae damage according to the accident. Although the organic brain damage was not found, left lateral hemidystonia and blepharospasm were observed after injury. Moreover, peripheral injuries to the face or neck have been implicated in many cases of focal or segmental dystonia . The physiological mechanism of peripheral trauma-induced dystonia is not known, while some experimental studies suggest that peripheral injury can lead to reorganisation at cortical, subcortical and spinal cord levels resulting in motor dysfunction. . There were several differences in clinical features between hemidystonia and blepharospasm of our patient. Hemidystonia was observed just after the accident, while the symptoms of blepharospasm gradually developed in several years after the accident.
Yukihisa Suzuki, A Patients with Hemidystonia and Blepharospasm Following Traumatic
Last date updated on June, 2014