Posts Tagged ‘mouth sores’

Canker sores (aphthous ulcers) are often mistaken for cold sores (fever blisters), but the two are actually quite different in terms of cause, location, and treatment. Canker Sores Canker sores occur inside the mouth, on the gums, cheeks, tongue, or floor, and are not contagious. They usually begin as small, red circular swellings that rupture…