Any pictures?: There are many reasons to do that. If you are allowed to post the picture of that area here, it will be helpful to recognize better. If you don't want to do that, I would go see a dermatologist.
Answered 7/6/2015
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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
A doctor has provided 1 answer
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