I just received my 10the radiation treatment today, for the first time I felt a lot of pain like a flaming arrow going through the side of my breast. I had a rash last week that was itchy and they prescribed a cortisone cream. They told me I would not feel the beam, but I felt the burning pain and herd it . The radiologist the zap is common . I know the difference between a zap from nerve pain and inflammation and a burning sensation. Has anyone else felt that burning sensation . It really unnerved me. It didn’t feel right.