Cold sore. Fever blister. Herpes Simplex Virus-1. These babies go by a lot of different names, but the experience is always the same:
- Telltale burning or itching near the lip
- A red bump appears a day or so later
- Bump becomes a cluster of blisters
- Blisters dry up and scab over
- The scab falls off
- The whole process usually takes two weeks or less.