A canker sore on the tongue is among the most painful mouth canker sores.
A canker sore can be located under the tongue but you can also get canker sores on the side of the tongue. You CANNOT get a canker sore on top of the tongue. If you have a sore on top of the tongue it is not a canker sore as canker sores are always underneath the tongue, on the side of the tongue or on the tip of the tongue.
A tongue canker sore is often very painful because the tongue is very sensitive. Canker sores located on the side of the tongue or on the tip of the tongue are among the worst because not only do they make eating difficult but also speaking. They can also last longer especially if you inavertably bite them (ouuuuch!).
If you often have canker sores on the tongue, AftaZen is a preventive treatment that can keep them away from your tongue. Learn how: