Stomatitis is inflammation of the mouth. It affects the mucous membranes, which are the thin skin coverings on the inside surface of the mouth. Types of stomatitis include canker sores and cold sores.

Stomatitis is a painful inflammation of the soft tissue inside a cat's mouth. It's similar to gingivitis, which is a type of gum disease. Stomatitis, though, affects the mucosal tissue, such as the ...

The mouth with all its various parts is one of the most sensitive — and useful — parts of the body. It’s where you experience ...