Some places in the US are more challenging for people with allergies to live in than others. Of course, even if you move, new allergies can develop in a new location as you become sensitized to the local allergens.
Still, it might be helpful to understand where allergies tend to be most severe. The following ranking of the "Spring Allergy Capitals of 2007" was done by the Asthma and Allergy Foundation of America. It is based on the following 3 factors:
Pollen scores (airborne...