Has your doctor suggested sending you to nuclear medicine to test for nuclear antibodies? Your allergies could depend on your immune system not working properly. I remember being told I was allergic to my own body and at the time I took it as a joke but down the line after many other tests the doctors discovered that I was indeed allergic to my own body, my immune system doesn't function and I can get flare ups to anything or everything depending on how run down I get or what triggers my immune system to react. And I do carry an Epi Pen for safety. I have RXs that I use if I notice the faintest red spot on my body because if I don't catch it in time I will break out and it could take weeks to control it.