Fever blister vs cold sore, are they the same thing?

Question

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?

SteadyWillow50 · Answer

Same virus, same prevention approach either way.

AmberMarmot93 · Answer

Yes, fever blister and cold sore are the same thing, both HSV-1.

SteadyLark20 · Answer

Called a fever blister because illness and fever can trigger them.

Alex (Labisan) · Answer

Thank you for sharing. For most people the biggest lever is daily sun protection on the lips, even on cloudy days.

Fever blister vs cold sore, are they the same thing?

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