What to do if I have red acne on chest that itches?

Manage it. Acne on the trunk usually requires both a topical such as benzoyl peroxide and systemic Rx suc has an antibiotic for at least a while. If it itches, you may be allergic to the bacteria -- or it may be someting other than acne. Dermatitis herpetiformis can do this. Your physician is your best guide.

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