A canker sore can show up on the inside of your lip or cheek, under your tongue or at the base of your gums. Usually, canker sores form one at a time, but sometimes they show up in a little cluster.

You can get them on or under the tongue and on the inside of the cheeks and lips ... Your mouth might tingle or burn before a canker sore appears. Soon, a small red bump rises. Then after a day or so ...

and sore throat. However, canker sores are non-contagious, they are visible inside the oral cavity such as cheeks, soft ...

Canker sores are small sores that form in the mouth. They're usually white or yellow with a red border and can appear inside the cheeks and lips or on the gums or tongue. Also known as mouth ulcers or ...

You can't catch them from someone else or give them to someone else. The main symptom of a canker sore is pain. However, when they first start to erupt, you may feel just a tingling sensation. Round ...

The sore forms inside the mouth, on the tongue or at the base of gums. It has a red border and white or yellow center. It is painful and makes eating and talking difficult. It is usually self ...