ALLERGEN Meaning and
Definition
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An allergen is a substance or particle that triggers an abnormal immune response in certain individuals, leading to allergic reactions. It is generally a harmless substance, such as pollen, pet dander, food components, mold spores, certain medications, or insect venom, but it provokes an immune system reaction in susceptible individuals. When an allergen enters the body, the immune system of an allergic person recognizes it as a threat and produces antibodies called Immunoglobulin E (IgE) to attack the perceived invader. In subsequent exposures, the allergen binds to these antibodies, activating the release of immune system chemicals like histamine, which triggers the symptoms of an allergic reaction.
Allergens can lead to a wide range of allergic responses, such as sneezing, coughing, itching, rash, hives, nasal congestion, difficulty breathing, watery eyes, or even anaphylaxis—a severe, potentially life-threatening reaction. The severity of an allergic reaction varies among individuals, with some being more sensitive to certain allergens than others.
Identifying and avoiding exposure to allergens is crucial for preventing allergic reactions. This often involves measures like avoiding specific foods, maintaining good indoor air quality, keeping pets away from allergic individuals, and taking caution with medications or insect bites. Managing allergy symptoms typically involves medication to alleviate the symptoms and, in some cases, immunotherapy to desensitize the immune system to the allergen over time.
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A hypothetical toxic substance in tuberculin, vaccine virus, and other infectious material, upon the union of which with ergin the phenomenon of allergy depends.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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Etymology of ALLERGEN
The word "allergen" originated from the combination of two Latin roots. The word "allergy" is derived from the Greek word "allos", meaning "other" or "different", and "ergon", meaning "work" or "action". The suffix "-gen" in English is a combining form that indicates a substance or agent that produces or generates something. Therefore, "allergen" can be understood to mean a substance that generates or causes an allergic reaction in individuals who are sensitive to it.
Similar spelling words for ALLERGEN
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