Melanonychia: What It Is, Causes, and More

Melanonychia occurs when you have brown or black lines in your nails. Learn about melanonychia, including the types and causes.
Do you have black or brown lines on your nail? This video explains what melanonychia is, what causes it, and how it can be treated.

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Melanonychia: What It Is, Causes, and More

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Melanonychia: What It Is, Causes, and More