Fever blister vs cold sore, are they the same thing?
Quick one, is a fever blister the same as a cold sore? I think they are two names for the same thing caused by HSV-1, but I want to be sure. And why is it called a fever blister?
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Same virus, same prevention approach either way.
Yes, fever blister and cold sore are the same thing, both HSV-1.
Called a fever blister because illness and fever can trigger them.