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 often seem to pop up out of nowhere and, once you have them, they’re often painfully hard to ignore — especially when you try to eat or even talk. So what, exactly, are canker sores? They ...

While you’re receiving treatment for cancer, some of the drugs you take can cause painful sores to develop inside your mouth. You can also get them if you’ve had a bone marrow (stem cell) transplant ...

Mouth ulcers, also known as canker sores, are painful lesions that develop inside the mouth, on the tongue, or along the inner cheeks. They can make eating, drinking, and even speaking uncomfortable.

Canker sores are lesions that can develop on the the soft tissues in your mouth or at the base of your gums. Most canker sores are small, measuring less than 1 millimeter in diameter, and they usually ...

Chemotherapy is a group of powerful medicines that can help slow or stop some cancers. But chemo can affect healthy cells in your body, too, like those that line the inside of your mouth and the kind ...

Infections, injuries, jaw problems, and cancer can all cause mouth pain. The location and type of pain, plus any other symptoms that occur with it, can help with identifying the cause. The pain may ...

Think you might have a canker sore? Here’s a look at common symptoms to help you distinguish these lesions from other sores. You might develop a canker sore after eating or drinking something acidic, ...

Can Ulcerative Colitis Cause Mouth Sores? Ulcerative colitis (UC) is a type of inflammatory bowel disease (IBD). UC is a chronic (lasting and persistent) condition that mainly affects the colon, part ...