What causes knot on back tongue?

A knot on the back of the tongue is usually a harmless condition called a torus lingualis. It is a small, round, or oval-shaped swelling that is made of the same tissue as the rest of the tongue. Torus lingualis is very common and is usually found in people who are over the age of 40. It is not clear what causes torus lingualis, but it is thought to be caused by a combination of genetic factors and wear and tear on the tongue.

Torus lingualis is usually asymptomatic, meaning it does not cause any pain or other symptoms. However, some people may experience discomfort or pain when the knot on their tongue rubs against their teeth or the roof of their mouth. In some cases, torus lingualis can also cause difficulty speaking or swallowing.

If you are concerned about a knot on the back of your tongue, you should see a doctor to rule out any other possible causes. Your doctor can also recommend treatment options if you are experiencing any symptoms from your torus lingualis. Treatment options may include surgery to remove the knot or a device to protect your tongue from rubbing against your teeth.