A member asked:

I have a small non-painful skin-colored pimple on my upper lip. it's been there for months now. i can't even pop it. could this be a cold sore?

4 doctors weighed in across 2 answers

Possibly: however, requires direct observation to make a diagnosis.

Answered 1/5/2019

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Certainly not: "Cold sore", herpes simplex, lasts about 1 week and never has these features. If it bothers you see a dermatologist.

Answered 8/7/2018

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