I once occasionally drove around an older lady who was practically a shut-in due to her allergies, as they ran the gamut from foods and spices to perfumes and household chemicals. She was the one who taught me about not being able to eat meat raised on grains, as she was allergic to several and always reacted to conventional meat in the exact same way she reacted as if she had eaten the grain itself. I had never heard of such a thing before. Might be happening in your case - just an idea.
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC