<<Disclaimer: Verify this information before applying it to your situation.>>

Thanks to all who contributed their experiences and sympathy regarding the
origins and treatments for canker sores.  All responses were opinions based
upon individual's experiences.  The best advice, IMO, was to consult one's
doctor or dentist.

Opinions on precipitating factors:

        dormant viruses activiated during stressful periods;
        possible relationship to gastric reflux disease;
        certain substances may precipitate canker sores in some individuals,
           such as soy, vinegar, citrus foods, tomatoes;
        individual reaction to unidentified gluten-containing foods.

Opinions on possible foods to avoid:

        nuts, citrus fruits and juices, tomatoes, coffee, vinegar;

Opinions on toothpaste:

        certain individuals might react to tartar controlling toothpaste,
           gluten-containing toothpaste, and those that contain sodium
           lauryl sulfate.

Treatment:

        Medications can be prescribed or recommended by your physician or
           dentist.
        These include antibiotic/anesthetic mouthwashes, apthasol, blistex,
           lydex, kenalog paste orabase, zourivax, prilosec.
        Several persons suggested the use of L-Lysine tablets (amino acid).

It seems that canker sores are prevalent in the celiac community.  However,
their origins are uncertain, treatment and incidence seem variable.

Carl in Ohio