Mouth ulcers and cold sores. can you have both at the same time?

Yes: Herpes simplex virus 1 which causes cold sores often will cause ulcers on the gums and tongue. The ulcers can be painful. There are other causes of mouth ulcers including the hand, foot and mouth virus and aphthous ulcers. There are rare causes of mouth ulcers as well.

Both are a virus, the canker sore is found mainly in the mouth and the cold sore on the lips. Both are painful can occur at same time and are treated differently. The cold sore is a HERPES SIMPLEX 1 virus and is contagious, the canker sore is not transmissible but brought on by anxiety and stress and acidic foods.