News tagged with allergy

Related topics: children · infectious diseases · immune system · vaccine · asthma

Holiday season triggers allergies

Getting out the boxes of holiday decorations from years gone by is a time-honored tradition. But in addition to stirring up memories, it also stirs up allergies.

Dec 18, 2013
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Each food fish can cause specific allergies

Food allergies are evidently much more specific than previously assumed. More precise tests may allow allergy sufferers more freedom of food choice in the future. This is the result of studies carried out by the Helmholtz ...

Dec 11, 2013
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Desensitization therapy for peanut allergy

(Medical Xpress)—Families with peanut-allergic children live in fear that their child will ingest peanuts, even minute amounts, accidentally. Now, a small pilot study published in the Journal of Allergy and Clinical Immunology ...

Nov 27, 2013
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You can have a food allergy, and eat it too

Have food allergies? If you answered yes, you know the best way to prevent a severe allergic reaction is to totally avoid the offending food. But according to a presentation at the Annual Scientific Meeting of the American ...

Nov 08, 2013
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Allergy

Allergy is a disorder of the immune system often also referred to as atopy. Allergic reactions occur to normally harmless environmental substances known as allergens; these reactions are acquired, predictable, and rapid. Strictly, allergy is one of four forms of hypersensitivity and is called type I (or immediate) hypersensitivity. It is characterized by excessive activation of certain white blood cells called mast cells and basophils by a type of antibody known as IgE, resulting in an extreme inflammatory response. Common allergic reactions include eczema, hives, hay fever, asthma, food allergies, and reactions to the venom of stinging insects such as wasps and bees.

Mild allergies like hay fever are highly prevalent in the human population and cause symptoms such as allergic conjunctivitis, itchiness, and runny nose. Allergies can play a major role in conditions such as asthma. In some people, severe allergies to environmental or dietary allergens or to medication may result in life-threatening anaphylactic reactions and potentially death.

A variety of tests now exist to diagnose allergic conditions; these include testing the skin for responses to known allergens or analyzing the blood for the presence and levels of allergen-specific IgE. Treatments for allergies include allergen avoidance, use of anti-histamines, steroids or other oral medications, immunotherapy to desensitize the response to allergen, and targeted therapy.

This text uses material from Wikipedia, licensed under CC BY-SA

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