I have psoriatic arthritis. On Tuesday, I had a Flu shot. I had an allergic reaction to that caused hives, pulmonary congestion, fever, increased swelling in joins. I had to take increased prednisone, benadryl, increased med to control elevated blood pressure, nausea. Other symptoms too numerous to mention. This will last (while diminishing) for weeks. I have also had a bad reaction to the pneumonia vaccine. Sometimes, I don't have a reaction and have been told it is related to the type of vehicle used. How can my physician determine which vaccines will cause the problem and which won't?