Canker/Cold Sores
Here you will find radio spots that might reference your illness.

People who are prone to cold sores usually do not handle tropical or citrus fruits all that well, or refined sugar. Too much acidic fruit and whammo, cold sores.

They are usually deficient in probiotics, essential fatty acids, especially the medium-chain fatty acids that are in coconut oil. You can apply coconut oil directly to the sore to aid healing.

They are often sensitive to the sudsing compounds in toothpaste and should switch to a toothpaste that is mainly just baking soda. Don't even use the Gel toothpastes.

Cankor sores are often due to deficiencies in: iron, folic acid, B12, zinc.

Beta-carotene and Vit A speed the healing process.

Hope that helps! :)