Herpes simplex virus type 1 symptoms (cold sores)

Location of cold sores near mouth, with close-up of blisters

Herpes simplex virus type 1 (HSV-1) can cause groups of small blisters that usually appear on the lip and around or inside the mouth. The groups of blisters are commonly called cold sores. They may be itchy or painful.

ByHealthwise Staff
Primary Medical Reviewer Sarah Marshall, MD - Family Medicine
Adam Husney, MD - Family Medicine
Specialist Medical Reviewer Martin J. Gabica, MD - Family Medicine
Kevin C. Kiley, MD - Obstetrics and Gynecology

Current as ofMarch 20, 2017

Current as of: March 20, 2017

Author: Healthwise Staff

Medical Review: Sarah Marshall, MD - Family Medicine & Adam Husney, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Kevin C. Kiley, MD - Obstetrics and Gynecology