Monarch Disease Ontology id MONDO_0007574 (spinocerebellar ataxia type 34) is a subtype of autosomal dominant cerebellar ataxia type I (ADCA type I), characterized by papulosquamous, ichthyosiform plaques on the limbs appearing shortly after birth and later manifestations including progressive ataxia, dysarthria, nystagmus and decreased reflexes. Also known as: Erythrokeratodermia with Ataxia, SCA34, erythrokeratodermia with ataxia, spinocerebellar ataxia and erythrokeratodermia.