(Canker Sores; Aphthous Stomatitis)
|Canker Sores in the Mouth|
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- Stress or trauma in the mouth, such as biting the tongue, trauma from falls, or toothbrushes
- Certain foods (especially acidic foods, such as tomatoes and pineapples)
- Changes in hormone levels
- Biopsy—a small sample of the sore will be sent to a lab for closer examination
- Blood culture or tests—to look for signs of an infection or other systemic health conditions
Oral Pain Relieving Rinses or Gels
Oral Antibiotic Rinse
- Chew food carefully. This may prevent biting your tongue or cheek.
- Avoid acidic foods that may promote canker sores. Tomatoes or pineapples are two foods that may cause problems.
- Talk to your doctor about how to get enough iron, vitamin B12, or folate in your diet. Low levels of these nutrients may contribute to canker sores.
American Academy of Family Physicians http://www.aafp.org
American Dental Association http://www.ada.org
Aphthous stomatitis. EBSCO DynaMed website. Available at: https://dynamed.ebscohost.com/about/about-us. Updated August 31, 2012. Accessed December 7, 2012.
Beers MH, Berkow R. The Merck Manual. 17th ed. West Point, PA: Merck and Co; 1999.
Canker sores. American Family Physicians Family Doctor website. Available at: http://familydoctor.org/familydoctor/en/diseases-conditions/canker-sores.html. Accessed December 7, 2012.
- Reviewer: Marcin Chwistek, MD
- Review Date: 12/2013 -
- Update Date: 01/13/2014 -