Hi, I just had a C.T. scan with contrast dye this afternoon of my chest. Never in the past have I ever had any bad reaction to the contrast, and I ve had many over the years. Today though, as soon as the Tech. started the contrast through , Immediately I got this Ice-cold feeling at the base of my neck and then suddenly sharp pain on the rt. side of my face. my jaw and then the pain was horrible and went to the rt. side of my head. I had to yell at them to stop and I was very afraid, never had I ever had any bad reaction or pain to contrast in a C.T. scan or M.R.I. Why would this happen?