MedlinePlus Medical Encyclopedia: Acanthosis nigricans on the hand

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Acanthosis nigricans on the hand

This photograph demonstrates brownish, hyperpigmented, velvety plaques overlying the joints of the hands (metacarpal and interphalangeal joints).

Update Date: 7/11/2008

Updated by: Michael Lehrer, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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