eMedicine Health - Canker Sores
- Consumer health resource center providing the causes, symptoms, and treatment of this condition.
- http://www.emedicinehealth.com/articles/20511-1.asp

Canker Sores: What Are They and What Can You Do About Them?
- Information from the AAFP.
- http://familydoctor.org/613.xml

Mouth Ulcers
- Community for sufferers. Includes a causes survey and a treatment survey as well as an informative public message board.
- http://www.mouthulcers.org

Animated-Teeth.com: Canker Sores / Aphthous Ulcers
- A discussion about these disorders and their causes.
- http://www.animated-teeth.com/canker_sores/t1_canker_sores.htm

Aphthous Stomatitis Web Site
- Personal site devoted to Recurrent canker sores. Guide to other sites on canker sores with updates based on the most current information about causes and medications.
- http://www.users.qwest.net/~dallas7/aphthous.html