[Clinical and physiological analysis and treatment of writer's cramp].

Clinical, psychological and electrophysiological features of 43 patients with writer's cramp (WC) were studied. "Complex clinical inventory for patients with a focal dystonia form--writer's cramp" has been elaborated. The stages in the disease development were found and focal and tremor forms were identified. According to electroneuromyography, a tremor form is characterized by higher awkwardness (defect in motor program) and peripheral disability compared to a spastic form. In a spastic form, a movement defect was more local. In WC treatment, complex action on central factors and peripheral mechanisms of pathogenesis is needed. Treatment duration, including clonazepam and motor defect correction, is not less than 12 months. Efficacy of clinical treatment was more pronounced in a spastic form.