Thanks so much for the responses. I did have radiation in the area so I was almost certain that was what caused it. I do take a sip of water or tea or juice with every bite of food to keep the irritation to a minimum. I ate PF Changs for dinner tonight and it was the first meal in a few weeks that didn't make the blisters wage war against my mouth - those little buggers hurt! I guess with everything I'll just have to be patient and wait it all out! Thanks again!