Can you tell me how can spinocerebellar ataxia affect the other organ systems?

Surely: Classic model is Freidrich's ataxia, associated with scoliosis, cardiomyopathy, retinitis pigments, hearing loss, and cataracts. Another disorder. olivopontocerebellar ataxia might cause autonomic issues, such as orthostatic hypertension. So, yes, we do encounter systemic associations with many of these disorders.

Part of the problem: There are different types of spino-cerebellar ataxia syndromes. Many of them have involvement of the autonomic nervous system producing problems with the normal function of many organs in the thorax, abdomen and pelvix, beside changes if the muscle tone and coordination. Genetic studies will determine the specific type. Thanks