[Alkaptonuria-ochronosis].

The authors describe the case of a 40-year old female patient. Since her childhood she realised of her urine the black discoloration of the underwear. For about a year, without subjective complaints, blue-black color of the skin involved the axillae and pinnae. For a year appeared the increased pain of thoracal and lumbal spine column and the limitation of motion of these parts. The examination of urine, histological and electron microscopical findings, the X-ray photograph of the spinal column confirmed the diagnosis of alkaptonuria or rather congenital ochronosis.