Autosomal dominant cerebellar ataxia is a genetic disorder that affects the cerebellum, causing problems with movement, balance, speech, and coordination. There are several other terms used to describe this condition, including spinocerebellar ataxia, hereditary ataxia, and dominant ataxia. Many different types of autosomal dominant cerebellar ataxia exist, each caused by a different mutation in a specific gene. Some examples include spinocerebellar ataxia type 1, spinocerebellar ataxia type 2, and spinocerebellar ataxia type 6. Despite the different names used to describe this disorder, they refer to the same underlying condition.