Thanks for the response Quincy.
I have always had moderate allergies all year (dust and mold, I assume) and they worsened in the spring with pollens. I took several different perscription and over the counter allergy medications over the years, none of which had any positive effect. However, most of my allergy symtoms completely disappeared a few years ago (other than a few rough days in the spring), but they resumed a few months ago around the time of my fourth Remicade infusion. I cannot explain why I stopped having the itchy/sneezing reactions, nor do I know if their return is in any way related to the Remicade.
I have never been tested so I do not know if I have reactions to specific allergens (or whether I am actually allergic, or just having a stimulated response).
I just find it odd that I have been told that Remicade is all but eliminating my immune system, yet I could still have an immune reaction to pollen. I suppose that there is much more to it than that, and I don't quite undertstand all of the elements at work here.