MONDO_0017175 (Machado-Joseph disease type 2) is a subtype of Machado-Joseph disease (SCA3/MJD) with intermediate severity characterized by an intermediate age of onset, cerebellar ataxia and external progressive ophthalmoplegia, with variable pyramidal and extrapyramidal signs. Also known as: SCA3, Thomas type, azorean disease, type ii, spinocerebellar ataxia, Thomas type.