Mouth sores are painful swellings occurring in certain parts of the mouth, which includes the lips and tongue. There are different types of mouth sores with various causes and symptoms, as well.
In mild cases, a mouth sore heal on its own for less than a week. Any mouth sore that lasts for more than a week or longer calls for a need to examine by a health professional.
These are small white swelling bounded by an area of redness. They are not contagious compared to another kind of mouth sore, which are cold sores. Canker sores can occur inside the mouth can be minor or in clusters. They are common and often reappear. Aside from the bacteria or virus, stress, tobacco use and other vitamin deficiencies are also some of the many factors that may cause a canker sore.