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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Pin Size Hole On Shoulder?

My wife has a small pin size hole in her skin on her shoulder. It appears black and has twice in the past had a black substance somewhat like sebum come out of it when she squeezes it. It has not gotten any bigger and has been on her shoulder for a couple of years now. just curious what it could be.
Tue, 10 Mar 2015
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What Causes Pin Size Hole On Shoulder?