Canker sores form inside the mouth on soft tissues like gums, cheeks, or under the tongue, and are not contagious. Cold sores usually appear on or around the lips and are caused by herpes simplex ...

Cold sores are blisters that usually appear on the lips or around the mouth. The herpes simplex virus causes cold sores, and while there is no cure, cold sore creams can ease symptoms and slightly ...

There are many potential causes of mouth sores. When these sores appear, they are often painful and can make everyday activities, such as brushing the teeth or eating hot food, more difficult. Most of ...