A canker sore usually heals on its own in a matter of days, but it can be a painful inconvenience for a kid who's waiting for it to get better. The mouth ulcer often develops on the inside of the cheek or on the tongue, making eating uncomfortable.

Canker sores hurt and sometimes make the smallest mouth movement painful. These tiny lesions in your mouth or gums can be caused by injury, vitamin deficiency, stress, a body chemistry imbalance, food allergies or acidic foods, such as pineapples, tomatoes and oranges.

Magic mouthwash is used to treat oral mucositis, or mouth sores, such as ulcers and sores from chemotherapy drugs. Over 40 percent of cancer patients receiving chemotherapy will get mucositis, according to registered nurse Carolyn Vachani, writing for the Abramson Cancer Center of the University of Pennsylvania.

Canker sores are small, shallow, painful lesions that develop at the gum's base and on the mouth's soft tissues. Although their cause is unknown, canker sores may be triggered by problems with the immune system, hormonal changes, medications, trauma and food allergies.

Sores or ulcers in the mouth can be painful, making it hard to talk, drink or eat without discomfort. If you have a mouth ulcer, there are steps you can take to improve your symptoms and help them heal as soon as possible.

Tongue ulcers occur commonly, especially among adolescents and adults younger than 40. Most are aphthous ulcers, or canker sores. These ulcers occur typically develop on the underside of the tongue or along the sides.

Canker sores aren't only for grown-ups. If your toddler complains of pain in her mouth or has difficulty eating, have her open wide. If you notice a small white or reddish ring on the inside of her lips or on her gums, your child may have a canker sore.

If you have a white or red, painful sore on your tonsil, you may be suffering from a canker sore. Canker sores, known medically as aphthous ulcers, are legions that can form anywhere in the mouth. Generally, canker sores can be treated using home remedies, if your doctor approves.

Canker sores, small painful ulcers can occur anywhere in your mouth, making life miserable for several days. Apthous ulcers, the medical term for canker sores, can be confused with cold sores, but the two are not related.

Canker sores are small lesions that usually appear inside of your lips, on your gums and under your tongue. Researchers have not found a viral cause, or any other definite canker sore cause.

According to Medline Plus, women develop canker sores more often than men, and they typically strike first when the sufferer is between 10 and 40 years of age. Benign canker sores are different than fever blisters, which are contagious blisters, and cold sores caused by the herpes simplex virus type 1.

Canker sores are small ulcers that can form on the soft tissue of your mouth, often at the base of the gums. The medical term for these lesions is aphthous ulcer.