Four photographic images. Compare: 4) Chapped Lips to 1) an intra-oral Canker Sore (Aphthous Ulcer), 2) Herpes Labialis (fever blister, sun blister, cold sore) and 3) Angular Cheilitis.

Interestingly, many people have a fever blister, sun blister and/or cold sore and don’t realize they all all the same thing, Herpes, a sexually transmitted disease (STD) can can be innocently contracted by something as simple as sharing a drink or a piece of food or a familial kiss hello.