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Mouth Diseases

Frequent canker and cold sore



I get frequent (month-to-month or every 2 weeks) canker and cold sore on either my lips, gums,or/and under my tongue? What can I do to decrease the number of times I get this problem.


Your condition is known as RAS or Recurrent Aphthous Ulceration. Because this could be based upon a number of causes, you should be evaluated by your dentist/primary care provider.

Best wishes.

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Response by:

Richard J Jurevic, DDS, PhD Richard J Jurevic, DDS, PhD
Formerly, Assistant Professor of Biological Sciences
School of Dental Medicine
Case Western Reserve University