What causes a canker sore? What is the fastest way to cure a mouth ulcer? What is the best medication for canker sores? Does ...
Canker sores are small, painful reddish lesions in the mouth that have a white or yellow center. Some causes of canker sores are spicy/acidic foods, vitamin deficiencies, braces, and stress.
Unlike cold sores, they are not contagious. The exact cause of canker sores is unknown, but they may be triggered by factors ...