melanotic macule nail Melanonychia Differential diagnosis of pigmented nail

Differential diagnosis of pigmented nail lesions Anais Brasileiros de Dermatologia Polydactylous longitudinal melanonychia is usually benign and can originate from local or systemic causes, including medication intake; monodactylous longitudinal melanonychia may be a sign of melanoma. Authors review the current literature to Subungual Melanocytic Lesions: Key Clinical and Pathologic Concepts and Biopsy Techniques ScienceDirect Melanonychia NailKnowledge Melanonychia: when should we worry? This dark stripe in the nail is called melanonychia essentially pigment in the nail bed. You can think of it like a mole of the nail.

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