Allergies - Describe Your Experience

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What is an allergy?

An allergy refers to an exaggerated reaction by our immune system in response to exposure to certain foreign substances. It is exaggerated because these foreign substances are usually seen by the body as harmless and no response occurs in nonallergic people. In allergic individuals, the body recognizes the foreign substance and one arm of the immune system generates a response.

Allergy-producing substances are called "allergens." Examples of allergens include pollens, dust mites, molds, animal proteins, foods, and even medications. To understand the language of allergy, it is important to remember that allergens are substances that are foreign to the body and can cause an allergic reaction in certain people. When an allergic individual comes in contact with an allergen, the immune system mounts a response through the IgE antibody. Therefore, people who are prone to allergies are said to be allergic or "atopic."

Austrian pediatrician Clemens Pirquet (1874-1929) first used the term allergy. He referred to both immunity that was beneficial and to the harmful hypersensitivity as "allergy." The word allergy is derived from the Greek words "allos," meaning different or changed and "ergos," meaning work or action. Generally speaking, allergy therefore refers to an "altered reaction." The word allergy was first used in 1905 to describe the adverse reactions of children who were given repeated shots of horse serum to fight infection. The following year, the term allergy was proposed to explain this unexpected "changed reactivity."

Allergy prevalance:

  • Approximately 10% to 30% of individuals in the industrialized world are affected by allergic conditions, and this number is increasing.
  • Allergic rhinitis (nasal allergies) affects roughly 20% of Americans. Between prescription costs, physician visits, and missed days of work/school, the economic burden of allergic disease exceeds $3 billion annually.
  • Asthma affects roughly 8% to 10% of Americans. The estimated health costs for asthma exceed approximately $20 billion annually.
  • The prevalence of allergic conditions has increased significantly over the last two decades and continues to rise.
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See what others are saying

Comment from: khan, 13-18 Female (Caregiver) Published: March 31

I have allergic rhinitis as diagnosed by the doctor. Medicines prescribed are, for one month, tablet Myteka 10mg one every day, tablet Zatofen one per day and Ticovate nasal spray. My forehead remained heavy, nostrils remained blocked. Other effects, my hair became gray/white and I get a smell in mouth, and I don't like breakfast at morning. This problem is with me for more than six years.

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Comment from: Anamika, 19-24 Female (Patient) Published: April 14

I am allergic to dust. I get frequent sneezes, running nose, irritation in nose, itching in upper palate of buccal cavity and itching in ears too. There is frequent sneezing in the morning and the condition worsens mostly in winter.

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