"Cancer sore" redirects here. Not to be confused with Canker sore.
Medical condition
Mouth ulcer
Other names
Oral ulcer, mucosal ulcer
A mouth ulcer (in this case associated with aphthous stomatitis) on the labial mucosa (lining of the lower lip)
Specialty
Oral medicine
A mouth ulcer (aphtha) is an ulcer that occurs on the mucous membrane of the oral cavity.[1] Mouth ulcers are very common, occurring in association with many diseases and by many different mechanisms, but usually there is no serious underlying cause. Rarely, a mouth ulcer that does not heal may be a sign of oral cancer. These ulcers may form individually or multiple ulcers may appear at once (i.e., a "crop" of ulcers). Once formed, an ulcer may be maintained by inflammation and/or secondary infection.
The two most common causes of oral ulceration are local trauma (e.g. rubbing from a sharp edge on a broken filling or braces, biting one's lip, etc.) and aphthous stomatitis ("canker sores"), a condition characterized by the recurrent formation of oral ulcers for largely unknown reasons. Mouth ulcers often cause pain and discomfort and may alter the person's choice of food while healing occurs (e.g. avoiding acidic, sugary, salty or spicy foods and beverages).
^Vorvick LJ, Zieve D. "Mouth ulcers on MedlinePlus". A.D.A.M., Inc. Retrieved 27 December 2012.
A mouthulcer (aphtha) is an ulcer that occurs on the mucous membrane of the oral cavity. Mouthulcers are very common, occurring in association with many...
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