Read on for specific causes. Canker sores can develop anywhere on the tongue or mouth. They are open white or yellow areas ...

Medically reviewed by Brian T. Luong, DMD Strawberry tongue is a term for a tongue that is swollen and bumpy. It is not a ...

swollen tongue. These sores are usually round or oval-shaped with a clear boundary and a gray or yellow center, surrounded by a reddish ring. Canker sores are not contagious; cold sores are.