I burned and peeled with my rad treatments. I didn't feel any pain except on lower chest area because the mastectomy I had left me totally numb on the upper chest. For the lower chest I used a numbing cream that the dr gave me. it stung really bad then the skin went numb after about 5 minutes. The peeling skin was the worse thing for me. It hung in long pieces from my underarm and chest area. Cleaning the wounds before treatment was a challenge without rubbing off the peeled part. But After treatments were done in two weeks i was healed up. I have a nice tan now on my left chest area. It has been a year since I went thru radiation and I still have the tan.