HSV-1: The incubation period (time between exposure and symptoms) of the HSV virus that causes cold sores is 2-12 days, but most people develop the sore within the first week. If the bump turns into a painful blister or an ulcer, it is most likely a cold sore caused by the herpes virus, but it is unclear if you caught it from the person you kissed.
Answered 7/27/2015
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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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