A 33-year-old female asked:
my lip is swollen on one side, looks like a small red scratch underneath my lip. it also hurts. could this be a cold sore? or allergic reaction?
1 doctor answer

A Verified Doctor answered
A US doctor answered Learn more
Not allergic: Usually an allergic reaction affects your whole mouth. Could be a cold sore. I can't really say but check with your family doctor or urgent care if you are concerned
Answered on Jul 24, 2016
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