What is the definition of T helper cells (Th1 and Th2) in the context of allergy?

Apr 11, 2025 ... 1 Definition. Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. 4.4.1.701. Allergy is described as an exaggerated response from the body's immune system to otherwise inert substances present in the environment. J Allergy Clin Immunol. 2010;126(6 Suppl):S1. Food allergy is an important ... The Guidelines include a consensus definition for food allergy, discuss ... A food intolerance is a non-allergic reaction that occurs after consuming a hard-to-digest food component. Symptoms include abdominal pain and cramps, gas, and ... Clinical criteria were proposed that emphasized the need for heightened suspicion of anaphylaxis in patients with a previous history of allergic reactions to a ... It is characterized by one or more symptoms including sneezing, itching, nasal congestion, and rhinorrhea. Many causative agents have been linked to AR. Dec 10, 2018 ... An allergy is the body's erroneous reaction to a foreign substance that is completely harmless for all intents and purposes. Anaphylaxis represents the severe end of the spectrum of allergic reactions. A number of different definitions for anaphylaxis are currently found in the ... The allergens chosen for testing often depend upon the age of the patient, history of allergen exposure, season of the year, and clinical manifestations. Mar 7, 2025 ... The Asthma and Allergy Foundation of America is the nation's leading allergy and asthma charity, is dedicated to keeping 65 million people ...