Acne mechanica: I'll bet it's from something you do while exercising. Do you do bench presses? Try topical benzoyl peroxide; if this doesn't work, your physician may offer you a short course of antibiotic if it bothers you -- and it may not.
Answered 7/7/2015
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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
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