Allergy Overview
Internet URL
http://www.aafa.org/display.cfm?id=9 
Sponsoring Agency
Asthma and Allergy Foundation of America
Description
This site provides information on Allergies. Allergies are diseases of the immune system that cause an overreaction to substances called "allergens." Allergies are grouped by the kind of trigger, time of year or where symptoms appear on the body.