I saw the team Wednesday they are going to radiate from my left ear to across my lips. Doc said he is sorry to have to do that but afaid not since the cancer was so close. I understand the burns on the outside. But I can not get my head around what this is going to do to the inside of my mouth. I did try to search this site but I am not finding the answer. Does it start burning after the first treatment does it take several weeks. Can I assume that the inside becomes uclerated?