I was tested for allergies by my chiropractor soon after DX. Found out I was allergic to calcium which my neuro said was impossible because the body is made up of calcium. Well, after going through an allergy elimination program for calcium, I am finally getting some results. My bone density test showed improvement (this is after fifteen years of these tests showing bone deterioration). Now when I take my calcium tablet I know that it is not getting sloughed off - it is actually being absorbed. Interestingly, my neuro has taken notice of the change and has changed his opinion to some degree. I have also tested allergic to citric acid which is in everything from soda pop to salad dressings. Needless to say I think allergies are a dynamic in MS and when you have them your body is stressing.
The allergy program I went through was NAET (you can google it on the Internet) Some people say it is "hokey, pokey", but I say, "don't knock it if you haven't tried it."