An allergy is typically defined as an abnormal sensitivity to a given substance that activates an immune response in the body. These substances, called allergens, can include… • Pollen • Pet dander • Dust mites • Mold spores • Detergents & perfumes • Biting insects • Household chemicals • Other common environmental conditions The body’s reaction to allergens may result in a variety of symptoms ranging from itching, sneezing and watery eyes, to hives, difficulty breathing and even potentially life-threatening conditions. Allergies are a very common problem, affecting at least two out of every ten Americans. Additionally, research indicates that people who have adverse reactions to one allergen tend to have the same, or similar, reactions to other substances.

Who Should Get Tested for Allergies? Adults and children of all ages who display symptoms of an allergic condition should get tested by a physician. Allergy symptoms can include the following: • Swelling, itching or watering of the nasal passages • Redness and itching of the eyes or tear ducts • Sneezing, bronchial constriction and wheezing (sometimes outright attacks of asthma may occur) • Swelling of the lips, tongue or throat (in severe cases the airway constricts due to swelling) • Redness, itching and possible pain in the ears (may include impaired hearing due to the lack of eustachian tube drainage) • A sudden rash, hives, redness or burning of the contact site