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Apr
Allergic Reaction Medical Term Definition. An anaphylactic reaction is a hypersensitivity type-I reaction which follows re-exposure to an antigen to which the body has previously formed an IgE antibody. The hypersensitive response of the immune system of an allergic individual to a substance. A doctor who diagnoses and treats allergy-related conditions. Read medical definition of Allergic reaction.
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A doctor who diagnoses and treats allergy-related conditions. A substance that triggers an allergic reaction in a person whos sensitive to it. This reaction can occur when the immune system attacks a normally harmless substance the allergen. They can be breathed into the lungs swallowed or injected. Four types of immune responses are usually described but the main reaction involving the eyes is type 1. When the person is exposed to that allergen again an allergic reaction may.
A misguided reaction to foreign substances by the immune system the body system of defense against foreign invaders particularly pathogens the agents of infection.
ă-lĕrjik rē-akshŭn A local or general reaction of an organism following contact with a specific allergen to which it has been previously exposed and sensitized. The definition of allergy Allergy occurs when a person reacts to substances in the environment that are harmless to most people. Within seconds of exposure to the antigens which may be proteins polysaccharides and haptens IgE molecules cross-link on the surface of mast cells and basophils stimulating vesicle degranulation and release of LBW mediators of anaphylaxis. Allergic reactions are exaggerated sensitivities hypersensitive reactions that occur when your immune system responds abnormally to common substances such as pollen dust and certain foods. Foot and Ankle Injection Techniques 2010. Allergy is the exaggerated and out-of-place reaction of the immune system to external substances or stimuli that are not harmful to the body so the reaction actually damages the body instead of helping it.