what are canker sores?

Asked by niamaninia 9 months ago, 1 answer.

What are canker sores?

Answered by amblessed on May 17, 2009, 06:15PM
12069 answers

Canker sores are small shallow ulcers that appear in the mouth and often make eating and talking uncomfortable. There are two types of canker sores:
Simple canker sores. These may appear three or four times a year and last up to a week. They typically occur in people between 10 and 20 years of age.
Complex canker sores. These are less common and occur more often in people who have previously had them:
http://www.webmd.com/oral-health/guide/canker-sores

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