Can't be sure: If you take an ear bud & soap to the area you may find it is darker from the buildup of dead skin.It is a hard area to get the old skin off without effort. It may be something else, but I can't think of anything bad it would represent.
Answered 7/18/2020
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9 doctors weighed in across 4 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
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