Posterior column ataxia - retinitis pigmentosa is characterized by the association of progressive sensory ataxia and retinitis pigmentosa. The disease is Monarch Disease Ontology identifier MONDO_0012177 (posterior column ataxia-retinitis pigmentosa syndrome). Also known as: PCARP, ataxia, posterior column, with retinitis pigmentosa, autosomal recessive posterior column ataxia and retinitis pigmentosa.