Evaluation ASAP: Although it could be nothing serious but I suggest you see a doctor ASAP to make sure this is not skin cancer. The vertical lines on the nail is very common and sometimes the dirt could get stuck and make them black but you should see a doctor to rule out the serious causes.
Answered 11/28/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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