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- Hypersensitivity - Wikipedia
Hypersensitivity (also called hypersensitivity reaction or intolerance) is an abnormal physiological condition in which there is an undesirable and adverse immune response to an antigen [1] [2] It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity
- Hypersensitivity- Introduction, Causes, Mechanism and Types
Hypersensitivity is increased reactivity or increased sensitivity by the animal body to an antigen to which it has been previously exposed The term is often used as a synonym for allergy, which describes a state of altered reactivity to an antigen
- Hypersensitivity Reactions: Types, Causes, and Treatments
Hypersensitivity reactions are allergic reactions that occur when the body mounts an immune response to a foreign body Types I–III occur within 24 hours of the exposure, while type IV is a delayed response, occurring 48–72 hours after the exposure
- What are the different types of hypersensitivity reactions?
There are four different types of hypersensitivity reactions Some evidence suggests a potential fifth type, but this may actually be a subset of type 2 hypersensitivity reactions Each type of
- Understanding Hypersensitivity: Causes and Mechanisms
Type IV Hypersensitivity (Delayed-Type Hypersensitivity – DTH) Type IV hypersensitivity is unique among the hypersensitivity reactions because it is cell-mediated, not antibody-mediated It involves the activation of T lymphocytes (primarily T helper 1 (Th1) cells and cytotoxic T lymphocytes (CTLs)) upon re-exposure to an antigen
- Understanding Hypersensitivity: Types and Clinical Implications
Hypersensitivity reactions are exaggerated immune responses that can lead to tissue damage and disease These reactions are significant as they play a role in various allergic conditions, autoimmune diseases, and even transplant rejections
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