Canker Sores
Canker Sores: Symptoms, Causes, Treatment, and Prevention What Are Canker Sores? Canker sores, also called aphthous ulcers or recurrent aphthous stomatitis, are shallow ulcers that develop on the soft tissues inside the mouth. They commonly appear on the: Inside of the lips Inside of the cheeks Tongue Floor of the mouth Soft palate […]