Had a Cortisone injection in my rotator cuff yesterday in GP's office. The pain was very intense and I consider myself as having a high threshold for pain. I am a 57-yr-old woman. I cried out 3 different times during the injection procedure, then felt as if I was under-going a General Anesthetic; that over-whelming feeling of "going under". I felt the room spin and could no longer focus. Apparently, I passed out from a sitting position to lying on my side on the examination table. Blood pressure fell (hence fainting) and I vomitted. Begin shaking and feeling cold. An ambulance was called and I was taken to hospital where I had an EKG, Blood work and BP monitoring. I was very dizzy and seeing double. I felt "out of it" and my mouth was dry. I had no hives, burning, tingling, itchiness - questions I was asked by the attending nurse. When I was assisted to a sitting position, I passed out again, but for a much shorter duration. When the attending Physician came to see me, 3 hours after being admitted to the ER, I was feeling better. Inside the ambulance, I kept hearing "allergic reaction to Cortisone", so this was my conclusion as well. Then the attending ER physician read my test results. He told me I was NOT allergic to Cortisone, but had experienced a "genuine and severe PAIN FAINT". I was now beginning to feel very foolish because in a sense I felt an allergic reaction warranted everything I had gone through. The doctor told me my system responded to the pain of the injection into an already painful and inflammed site to such a degree, I fainted and was "out" for longer than normal. He told me to take Tylenol 3 for pain, ice the injection site for brief periods of time and wear a 'resting sling'. I am not to over-work my arm for a few days. I believe my shoulder pain has been reduced to some degree, but I will never undergo another Cortisone injection. My story is not intended to frighten anyone considering a Cortisone injection. It is intended for the purpose of sharing. Everybody is unique, but for the sake of information, perhaps what I have written will be useful.