Spinocerebellar ataxias are heterogeneous disorders with overlapping clinical features. Spinocerebellar ataxia-6 is a dominantly inherited condition characterized by relatively pure ataxia with a paucity of other manifestations including extrapyramidal findings. We report on two patients with genetically proven SCA-6 who had dystonia. One patient presented initially with dystonia, which remained the most disabling problem. Dystonia may occur in SCA-6 and can be disabling.
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Sethi et al. (2002) studied this question.
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