Canker sores are painful ulcers that occur in the mouth, including on gums. Here's a look at how to deal with them.

Medically reviewed by Renita White, MD Mouth and tongue lesions are often one of the first symptoms of human immunodeficiency ...

Many people associate mouth ulcers with eating spicy or acidic foods, but the reality is far more complex. While diet can play a role, mouth ulcers are influenc ...