If you are allergic, it means your body is sensitive to a particular substance. People who have allergies are usually allergic to more than one thing. Allergy-causing substances, called antigens or allergens, make the body form antibodies. Chemicals such as histamine are released when antigens and antibodies combine. These substances that are released are what cause your allergic symptoms.
Allergies run in families.
Symptoms usually show up before age 30, and some childhood allergy symptoms disappear by themselves. The frequent colds your child suffers from may actually be allergies. There are several options for controlling allergy symptoms . If you are allergic to certain foods or animals, avoidance can work well. But dust mites, mold, and pollen are pervasive.