Allergies don't make any sense. Anyone who has dealt with the puffy eyes, ceaseless sneezing, and insatiably itchy mouth cause by allergies has tried to figure out the purpose of their misery, only to learn this sad lesson. "It's the body gone awry," says Dr. Martha White, allergist and director of research at the Institute for Asthma and Allergy. "There not necessarily a logical rhyme or reason."
Although you won't find a satisfying justification for why your body reacts to cats and dust in such a maddening way, you can have some level of understanding about where these reactions come from and how you can combat them.