Mouth Sores: Pictures, Causes, Types, Symptoms, and Treatments Mouth sores have many possible causes, such as infections, trauma, and tobacco use Seek care for certain mouth sores, like ones with white patches or that develop after you start a new medication
Canker sore - Symptoms and causes - Mayo Clinic Canker sores, also called aphthous ulcers, are small, shallow lesions that develop on the soft tissues in your mouth or at the base of your gums Unlike cold sores, canker sores don't occur on the surface of your lips and they aren't contagious They can be painful, however, and can make eating and talking difficult
Canker Sore: Symptoms, Causes Treatment - Cleveland Clinic Canker sores — or aphthous ulcers — are small ulcers in the lining of your mouth A canker sore looks like a white or yellowish mouth sore with a red border You usually get it at the base of your gums, on or under your tongue, or inside your lips or cheeks