What can i do to prevent canker sores? i have had them all in my mouth to a point where i cannot eat. i have had them my whole life. health concern?

Acyclovir: If you always are getting canker sores, the you might try a regular schedule of taking lysine from a health food store or go to an md or dentist and ask for acyclovir. Other things that can cause an outbreak are stress, excessive sun exposure or some irritants like smoking or spicy foods. See if any of those pertains to you.

De-stress: Stress is often the culprit. Family, work, etc. Also, hormonal variables can be involved. Nutrition can also be a factor. It would not hurt to get the lesion biopsy. Nutrition can also be a factor, alone with a proper vitamin regime. When you have an episode, try a commercial product called kanka to coat these ulcers. It will give you instant relief and can be used as often as you need.