melanonychia


Melanonychia is a blackening on the nail plate by melanin pigmentation. It can often present as a darkened band under or within the nail plate. Often it runs vertically, and when it does, it's referred to as a longitudinal melanonychia or melanonychia striata.

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Required Reading

When Darker Isn’t Better

July 1, 2006

These black bands aren’t worn for power. The dark bands on nails, melanonychia, are often harmless, but they can also be signs of cancer.

The Nail Doctor: Nail Streaks, Like Skin Moles, Should Be Watched

December 1, 1995

Although the cause of most nail pigment changes is benign (such as stains), more serious problems such as cancer must be considered.

Nail Pigment Changes Can Mean Cancer

July 1, 1993

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