News tagged with allergy

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

ACAAI: doctors not adhering to new peanut guidelines

(HealthDay)—Many pediatricians are not adhering to revised guidelines for peanut allergies that recommend early introduction to high-risk infants, according to a study presented at the American College of Allergy, Asthma ...

Oct 29, 2017
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Exercising with asthma or allergies

(HealthDay)—Allergies and asthma can make exercise more challenging. But if your condition is well managed and you take a few precautions, you should be able to work out without worry.

Oct 20, 2017
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New genetic clue to peanut allergy

Canadian researchers have pinpointed a new gene associated with peanut allergy, offering further evidence that genes play a role in the development of food allergies and opening the door to future research, improved diagnostics ...

Oct 11, 2017
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Allergy relief do's and don'ts

(HealthDay)—As the seasons change, more and more people are sneezing because of allergies. And the numbers are rising, with those in urban areas particularly affected, according to the American Academy of Otolaryngology-Head ...

Oct 05, 2017
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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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