allergy testing asthma 1 articles:
Many people are allergic to animals. Most people are not allergic to the animal's fur or feathers. The allergy is more usually an immune reaction to a protein (an allergen) found in the saliva, dander (dead skin flakes) or the urine of an animal. The allergen gets carried in the air or in dust on very small, invisible particles. It then lands on the lining of the eyes (conjunctiva) and nose. It may also be inhaled directly into the lungs, causing allergic symptoms. Allergen contact with an allergic person's skin may also cause itching and hives .
allergy testing asthma 2 articles:
In some children, food allergies often produce flares of atopic dermatitis . Another common manifestation of food allergy is the oral allergy syndrome, in which certain foods cause itching or hives where they touch the lips and mouth. Fresh fruits and vegetables are often associated with this kind of reaction. These reactions are believed to be due to pollen protein cross-reactions (responses to fruits and vegetables frequently occuring as clusters of hypersensitivity to members of the same botanical family, for which the immunologic basis lies in a number of common allergens) in the fruits, which are inactivated by cooking. For example, persons sensitive to ragweed pollen may develop hives on the lips while eating melon. Similarly, people sensitive to birch tree pollen may react to fresh apples. The same people, however, might tolerate cooked apples, as in apple pie.
allergy testing asthma 3 articles:
In the United States, between 30 and 60 million people suffer from a runny or stuffy nose each year. This is a problem known as rhinitis. There are several types of rhinitis, including allergic rhinitis.
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