Immunology

Don't let allergies spoil your holidays

(HealthDay)—Asthma or allergies can put a damper on holiday gatherings. But there are ways you can stay healthy, the American College of Allergy, Asthma and Immunology says.

Immunology

Search for the source of antibodies would help treat allergies

Researchers of Sechenov University, together with colleagues from Russia and Austria, have summarized everything known about cells producing group E antibodies. These molecules are responsible for most of the allergic reactions, ...

Diseases, Conditions, Syndromes

Studies confirm safety of 9-valent HPV vaccination

(HealthDay)—The safety of the 9-valent human papillomavirus vaccine (9vHPV) has been confirmed, according to two studies published online Nov. 18 in Pediatrics.

Immunology

Breaking news on oral food challenges

Oral food challenges (OFCs) are the gold standard for allergists when diagnosing a food allergy. The person being tested is given a very small dose of the food by mouth under the supervision of a board-certified allergist ...

page 1 from 23

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