Canker sores, or aphthous ulcers, are small, painful lesions that develop inside your mouth. They commonly appear after stress, minor mouth injuries, or hormonal changes, as well as with certain ...

Roll your tongue around your mouth, and you might feel a sting from a new tender spot. A tiny, unwelcome crater of pain, a red circle of fire tucked against your cheek. It feels worse with every ...

Canker sores are painful ulcers that form inside your mouth. The sores can affect daily habits like eating and drinking. Experts recommend key practices like regular teeth brushing and flossing to ...