Dystonic tremor: Definition, clinical spectrum, pathophysiology, and treatment

Tremor is now considered an important phenotypic feature of dystonia. Tremor in dystonia is of two types: dystonic tremor, where tremor occurs at the same site that involves dystonia, and tremor associated with dystonia, where tremor occurs at a site other than that involving the dystonic region. A patient may be found to have both the conditions together, and different syndromes are separated on clinical grounds. The aim of this review was to discuss the definition, clinical spectrum, pathophysiology, and treatment of dystonic tremor.