Question: My tongue has been sore for a few weeks on one side. It is very tender. I have never heard of this problem before. What do you think it could be?

Dr. Hibberd’s answer:

Soreness on one side of your tongue in the absence of infection or tumor usually comes from trauma (caused by heat, chemicals, or a physical injury). Vitamin C deficiency and B12 deficiency can also cause tongue irritation. Perhaps you grind your teeth when asleep. Biting your tongue when asleep suggests seizure disorder. Localized inflammation from infection is possible, but this usually causes a sore, ulcer, or a red area with swelling. In any case, a sore that lasts more than a few days should be examined by your doctor. Remember that a yeast infection in the mouth of an adolescent or adult is now a recognized reason to have an HIV test.