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 ...

Canker sores are painful sores inside the mouth. The lesions are oval shaped with a yellow-gray center that a red ring surrounds. Canker sores progress through different stages and typically last 1–2 ...

Tongue soreness can be widespread or occur on one or both sides of the tongue. Treatments will largely depend on the cause, but may include good oral hygiene, mouth rinses, or certain medications. A ...