Why do cold sores most commonly appear specifically on lips and not other parts of one’s face?

Question

Cold sores aka HSV-1

In: 62

Answer 1

The lips get a film of saliva on them from the mouth. The saliva conducts heat out from the pores in the skin out to the air. And the saliva even evaporates taking the heat energy away from your skin. And it does not help that you get airflow from your nose or mouth to carry the moist hot air away from your lips.