Red bump: It is likely that it was a pimple/blackhead and is still healing. Herpes usually has more than just one "bump" in a defined area if not located on the lip. A chemical burn: you'd have to have a history of chemical exposure. Best of luck.
Answered 7/15/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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