An allergen is a type of antigen that produces an abnormally vigorous immune
response in ... Another type of allergens are urushiol, a resin produced by poison
ivy and poison oak, which causes the s...
Types of Allergies. Allergies, including allergic rhinitis, affect an estimated 40
million to 50 million people in the United States. Some allergies may interfere
Learn about the different types of allergies and what you can do about them.
What is an allergy? An allergy is a specific reaction of the body's immune system
to a normally harmless substance, one that does not bother most people.
This type of allergy is characterised by the immediate onset of symptoms (within
seconds or minutes). Usually the skin or mucous membranes are affected.
Mar 21, 2012 ... ... 50 million Americans are allergic to something — whether pollen, peanuts, or
pet dander. Learn some of the most common kinds of allergies.
Sep 29, 2013 ... Allergies are over-reactions of the immune system in certain individuals ... Types
of allergy are classified to denote cause, severity and possible ...
There are different types of food allergy reactions. A food allergy occurs when the
body's immune system sees a certain food as harmful and reacts by causing ...
It reacts by causing an allergic reaction. Substances that cause allergic reactions
are allergens. There are many types of allergies. Some allergies are seasonal ...
Allergic reaction information on food, drug, and insect sting allergy, indoor
allergens, symptoms, treatment, and medications.