What is the difference between a canker sore and a cold sore? Canker sores and cold sores are common but distinct oral ...

Canker sores are small, painful reddish lesions in the mouth that have a white or yellow center. Some causes of canker sores are spicy/acidic foods, vitamin deficiencies, braces, and stress.

Cold sores occur on the outside of the mouth and are caused by the herpes simplex virus. Canker sores are blisters inside the mouth that can occur due to injury, nutritional deficiencies ...

Canker sores inside mouths are one of the most nagging problems that we humans can experience. The word canker comes from Latin cancer, but here it means an eroding/erosive ulcer that spreads out.