Dysarthria in Spinocerebellar Ataxia Type 3: Prevalence and Disease Progression.

Background: Spinocerebellar ataxia type 3 (SCA3), a common genetic disorder, results from an expanded CAG repeat in the gene. It often leads to dysarthria, which impacts patients' quality of life. Yet, there is limited research on how dysarthria's prevalence relates to clinical features and disease progression in SCA3.