My neck has gotten blisters on the back and sides and seems to be going down further on my shoulder area and it itches like crazy. I had my RO to look at it and he said it was from radiation. My question is how would you be able to tell if it's actually from the radiation or could it possibly be from an allergic reaction to something I've used or taken? The reason I am asking is that it seems to be spreading and it is like small blisters that is itching me to death. Did radiation burns itch other of you like this? Thanks, Angel