Gingrich Dental PC - Lets talk about tingles.... What is a cold sore? A cold sore is a small, painful, raised area of small, fluid-filled blisters. They usually happen where the lip
DDS Associates - From the National Society of Dental Health: COLD SORES are a painful infection caused by the herpes simplex virus. Also known as fever blisters, these blisters can appear on
![Mayo Clinic Q and A: Cold sore virus can 'wake up' after remaining dormant for years - Mayo Clinic News Network Mayo Clinic Q and A: Cold sore virus can 'wake up' after remaining dormant for years - Mayo Clinic News Network](https://newsnetwork.mayoclinic.org/n7-mcnn/7bcc9724adf7b803/uploads/2016/06/close-up-of-a-womans-lips-with-cold-sores-original.jpg)