They usually heal in one to two weeks, but larger sores may persist for one to two months. These annoying painful round ulcers develop inside anywhere in the mouth including the tongue. Herpes Cold SoresThe cause of cold sores is the herpes simplex virus.
They usually appear on the inner surface of the cheeks and lips, soft palate, the base of the gums and on or under the tongue. What does a canker sore look like. But while both look bad and cause pain, their causes and treatments are different. Canker sore is one of the most unpleasant experiences to have, especially when it is present on the tongue. Canker sores can be very painful and they can make eating and talking uncomfortable. They observed both lightning and static electricity, however they did not make any logical connections between the two. The ulcer is small and shallow with a red periphery and yellow or white center.