I have a fairly nasty case of Primary Immune Deficiency, and am allergic to Gamma Globulin, which a common treatment. It is a simple blood test. If you have it, there are treatments, but not for me! It is worth gerring tessted for by an immunologist, not a allergist.
I have no idea if I do or not unfortunately, but you’ve given me something to think about.
The test is a simple blood draw. Look up the Immune Deficiency Foundation. They actually pick up the phone. You can talk to a nurse.