A mouth sore or canker sore is a shallow and painful ulcer in the mouth cavity (inside of the mouth). Mouth sores are also known as aphthous ulcers and can occur on the sides of the mouth cavity (inside of the cheek), under or on the tongue or inner lip. The condition of multiple, recurring mouth sores is medically referred to as aphthous stomatitis.
continue reading What are Mouth Sores? Oral Canker Sores, Mouth Ulcers
