A member asked:

What does a black line on my toe nail mean?

3 doctors weighed in across 2 answers

Answers include: Possible lint from sock, blood, normal variant or possible melanoma. Should be examined by a doctor. The latter is dangerous.

Answered 4/20/2013

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Fungus or trauma: This could also be nail fungus or past trauma to the nail matrix causing discoloration of the nail form the point of trauma.

Answered 4/23/2013

5.2k views

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