Discoloured nail


Patient with longitudinal (lengthwise) melanonychia of a nail. Melanonychia is a nail discolouration caused by the pigment melanin. It may be the equivalent of a mole on the skin, be due to infection or injury, or a sign of disease such as skin cancer.


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Photo credit: © RICHARD USATINE MD / SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: Yes

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