An Unusual Presentation of Ochronosis with Palmar Pigmentation

Abstract

Ochronosis is the deposition of homogentisic acid in connective tissues resulting in bluish black discolouration. Hereby a case of ochronosis over the palmar surface of hand in 41-year-old male patient has been reported. Histopathological examination revealed yellowish brown colouration of collagen bundles in reticular dermis over palm of hand.

Keywords

• alkaptonuria
• homogentisic acid
• methylene blue stain