Doctor's Notes on Canker Sores
Canker sores, also known as aphthous ulcers, are common causes of painful sores in the mouth. Signs and symptoms of canker sores are as follows: small (less than 1 cm) oval round ulcers with a reddish border. They can occur in the gums, under the tongue and inside the cheeks and lips.
The exact cause of canker sores is not known. The following is a list of factors that have been implicated in triggering canker sore outbreaks in individuals: anxiety, stress, genetics, environmental factors, medications and/or food allergies. In addition, diseases such as Crohn’s disease and ulcerative colitis been associated with canker sores.
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See AnswerREFERENCE:
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.