What are cold sores?

Also known as: fever blisters, herpes simplex virus 1, HSV-1

Cold sores are common, small painful blisters that usually appear on or around the lips or mouth (can also occur on the nose and face) and are frequently called "fever blisters". They typically last up to 2 weeks and tend to recur in children frequently after some stress.


Reviewed by: Jack Wolfsdorf, MD, FAAP

This page was last updated on: 1/29/2019 3:21:13 PM

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