Aphthous ulcer (patient information)

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What is an Aphthous ulcer?

An aphthous ulcer, more commonly known as a canker sore, is a painful, open sore in the mouth. Canker sores are white or yellow and surrounded by a bright red area. They are benign (not cancer).

What are the symptoms of Aphthous ulcers?

The first symptom is usually a tingling or burning sensation that you feel before other symptoms develop.

The following symptoms may then occur:

• Painful, red spot or bump that develops into an open ulcer

Center is colored white or yellow Usually small (under 1 cm) but occasionally larger Single bump or group of bumps (crops)

• Sore may turn gray just before starting to heal

Less common symptoms include:

• Fever
• General discomfort or uneasiness (malaise)
• Swollen lymph nodes

Pain decreases in 7 to 10 days, with complete healing in 1 to 3 weeks. Particularly large ulcers (greater than 1 cm in diameter) often take longer to heal (2 to 4 weeks). Occasionally, a severe occurrence may be accompanied by nonspecific symptoms of illness, such as fever. Canker sores often return.

What causes Aphthous ulcers?

Aphthous ulcers may be linked to problems with the body's immune (defense) system. The sores may occur after a mouth injury due to dental work, aggressive tooth cleaning, or biting the tongue or cheek.

They can also be triggered by emotional stress, dietary deficiencies (especially iron, folic acid, or vitamin B-12), menstrual periods, hormonal changes, food allergies, and similar situations. They occur most commonly with viral infections. In some cases, the cause can not be identified.

Who is at risk for Aphthous ulcers?

Aphthous ulcers are very common and everyone is at risk.

How do I know I have an Aphthous ulcer?

Your health care provider can often make the diagnosis by looking at the sore. If Aphthous ulcers persist or continue to return, tests should be done to rule out other causes, such as erythema multiforme, drug allergies, herpes infection, bullous lichen planus, and other disorders.

Aphthous ulcers are not cancer and do not cause cancer. There are types of cancer, however, that may first appear as a mouth ulcer that does not heal. Squamous cell carcinoma is an example of this type of cancer.

A biopsy may be used to distinguish an Aphthous ulcer from other causes of mouth ulcers.

When to seek urgent medical care

Apply home treatment and call your health care provider if symptoms of canker sores persist or worsen, or canker sores recur more often than 2 or 3 times per year. If you have a mouth ulcer that lasts more that 2 weeks, you should see your doctor to rule out possible cancer.

Call your health care provider if symptoms are associated with other problems such as fever, diarrhea, headache, or skin rash.

Treatment options

Treatment is usually not necessary. In most cases, the sores go away by themselves.

If you have an Aphthous ulcer, you should not eat hot or spicy foods, which can cause pain. Mild, over-the-counter mouth washes or salt water may help. There are over-the-counter medicines that soothe the painful area. These medicines are applied directly to the sore area of the mouth.

The easiest home remedy is a mixture of half hydrogen peroxide and half water. Use a cotton swab to apply the mixture directly to the canker sore. Then, dab a small amount of Milk of Magnesia on the canker sore, three to four times a day. This is soothing and may also help it heal.

Another home remedy is to mix half Milk of Magnesia and half Benadryl liquid allergy medicine. Swish this mixture in your mouth for about 1 minutes, then spit it out.

Other treatments for more severe cases include applying fluocinonide gel (Lidex) or chlorhexidine gluconate mouthwash. Powerful anti-inflammatory medicines called corticosteroids are sometimes used.

To prevent bacterial infection, brush and floss your teeth regularly and visit the dentist for routine care.

Diseases with similar symptoms

Herpetic stomatitis

Where to find medical care for Aphthous ulcers

Directions to Hospitals Treating Aphthous ulcers

Prevention of Aphthous ulcers

The best way to prevent Aphthous ulcers is to keep your mouth free of infection. This includes brushing and flossing your teeth, keeping your hands out of your mouth and visiting the dentist for regular cleanings.

What to expect (Outlook/Prognosis)

Aphthous ulcers usually heal on their own. The pain usually decreases in a few days. Other symptoms disappear in 10 to 14 days.

Sources

http://www.nlm.nih.gov/medlineplus/ency/article/000998.htm

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