A member asked:

What is the difference between a pimple o the lip and cold sore? how did i get it? i was not in contact with anyone who has it.

A doctor has provided 1 answer
Dr. John Kirk answered

Specializes in Obstetrics and Gynecology

Depends: It kind of depends. The picture shows a classic cold sore. A pimple may be significantly different in its appearance, however, it is sometimes very difficult to tell. If fresh, within a day to three days, a culture can be taken or a dna probe checked. This can be definitive if positive, but not so if negative. Cold sores are exceptionally common affecting up to 75% of all americans.

Answered 11/1/2017

5.4k views

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