Canker Sores

Canker sores (medically known as aphthous ulcers) are inflamed tissue cavities, usually found in the mouth. They can be quite painful, often inhibiting eating ability. Even though up to one out of every four people develops canker sores, they are not contagious.

Causes

Researchers disagree about the cause of canker sores. One unconfirmed theory suggests that the sores are the result of an autoimmune response, whereby the body develops antibodies to its own tissue.

Other factors that have been thought to trigger canker sores include fever, menstruation, fatigue, tension, and allergies. Some people get canker sores after eating certain foods. Poor dental hygiene, ill-fitting dentures, and stiff toothbrushes may also contribute to the development of the sores.

Symptoms

Canker sores can occur singly or in groups. They can be found almost anywhere in the mouth -- inside the cheek and on the tongue, lips, or gums.

A canker sore begins as a small blister. After the blister breaks, a small ulcer develops and enlarges until there is a bright red sore surrounding the whitish-yellow cavity. This sore can last about 10 to 14 days before healing. Canker sores leave no scars. However, they often recur, sometimes every few weeks or months.

Treatment

Canker sores have no cure, but there are several treatments that may relieve pain. Some physicians prescribe the antibiotic tetracycline for canker sores. Treatment involves dissolving the capsule in an ounce of warm water and swishing the mixture in the mouth for a few minutes, three or four times a day for five to seven days. Therapy may also include soaking a cotton wad in the solution and applying it directly to the sores.

There are also various over-the-counter preparations designed to reduce discomfort from canker sores. Ask your doctor to recommend one that might work well for you.

Prevention

People who have repeated attacks of canker sores should see a physician or dentist. The chances of recurrence may be lessened by improving oral hygiene or denture fit or by avoiding certain foods or other substances.



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