How has the definition of allergy evolved over time?

An allergen is an otherwise harmless substance that triggers an allergic reaction in sensitive individuals by stimulating an immune response. May 22, 2015 ... However, the most used of these are the definitions proposed by the World Allergy Organization (WAO) [5] which defines anaphylaxis as a ... But without a regulatory definition in place, there can be no assurance that foods labeled as "dairy free" are in fact free from any milk proteins. Should milk- ... QDM Datatype and Definition. "Allergy Intolerance". Data elements that ... ["Allergy, Intolerance": "Substance with angiotensin II receptor antagonist ... This uniform definition will allow a better definition of the phenotypes of severe allergic (and related) diseases for clinical practice, research ... Allergies, also known as allergic diseases, are various conditions caused by hypersensitivity of the immune system to typically harmless substances in the ... Allergen: Any antigen that causes allergic reactions such as pollens, mites, foods,etc. Antibody: People produce these molecules in response to antigen ... Aug 9, 2016 ... PDF | Background: Allergy and hypersensitivity can affect people of any age and manifest with problems in a range of organ systems. Allergy drops work by introducing a small amount of an allergen, such as pollen or dust mites, into the body by placing the drops under the tongue daily. Over ... Jul 25, 2023 ... Allergy medicine is a medication used to treat symptoms of allergic reactions, such as sneezing, itching, and runny nose. It comes in different ...