Canker sores are medically known as aphthous ulcers or, quite simply, oral ulcers. These ulcers are shallow painful sores in the mouth, which appear red and might have a red or white coating over them. The most prominent places where these sores occur are inside the lips or cheeks, base of the gums or under [...]
Canker sore, also known as mouth ulcer, is an open sore in the mouth, which appears as a painful white or yellow ulcer surrounded by a bright red area.
A canker sore is not harmful only painful.
Canker sores only form on the “loose” tissues of the mouth, such as: the skin covering the inside of the [...]