Catatonia associated with uraemic encephalopathy.

: Catatonia is oily a clinical diagnosis with a variety of possible aetiological conditions. Among the many neuropsychiatric disorders in renal failure, catatonia is one which has not been established well. The authors report two cases in which despite strong evidence for primary psychiatric disorder, on investigation the catatonic state was found to be associated with ureaemic encephalopathy.