Fletcher Allen, a Vermont university hospital and medical center, serves all of
Vermont and the northern New York region. Located in Burlington, Fletcher Allen is a regional, academic healthcare center and teaching hospital in alliance with the University of Vermont.
Canker Sores of the Mouth
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Canker sores (aphthous stomatitis) are painful white ulcers in the mouth. They appear most often on the tongue, inside the cheeks, and inside the lips. Unlike cold sores, canker sores are not contagious, but in some people they keep coming back. Canker sores cause pain that may make it difficult to speak or eat.
Last Revised: September 14, 2012
Author: Healthwise Staff
Medical Review: Kathleen Romito, MD - Family Medicine & Arden Christen, DDS, MSD, MA, FACD - Dentistry
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