3. How is an allergy diagnosed ?
4. What happens during an allergic reaction ?
5. Some allergic reactions are dangerous. Comment.
6. How common are allergies ?
7. What are the most common allergens ?
C. Long answer questions :
Answers
Answer:
3)..The most common way to test for allergies is with a skin test. That's because it gives the fastest, most accurate results. The one doctors use most often is called a scratch test. A doctor or nurse will put a tiny drop of an allergen on your skin, usually on the inside of your arm or on your back........
4)Your immune system overreacts by producing antibodies called Immunoglobulin E (IgE). These antibodies travel to cells that release chemicals, causing an allergic reaction. This reaction usually causes symptoms in the nose, lungs, throat, sinuses, ears, lining of the stomach or on the skin.
5)The most dangerous allergic response is chronic inflammation, which can damage tissue cumulatively wherever it occurs. The antibodies attack the intruder and in the process draw other tissues -- cells and fluids -- to the afflicted area.
6)More than 50 million Americans (1 in 6) experience all types of allergies, including indoor/outdoor allergies, food and drug, latex, insect, skin and eye allergies. The number of people who have allergies continues to increase across all ages, sex and racial groups....
7)Many things can trigger allergies. The most common are pollen, dust mites, mold, animal dander, insect stings, latex, and certain food and medications.........
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