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- DictionaryHy·per·sen·si·tiv·i·ty/ˌhīpərˌsensəˈtivədē/
noun
- 1. extreme physical sensitivity to particular substances or conditions: "hypersensitivity to common chemicals"
- 2. a tendency to be easily hurt, worried, or offended: "hypersensitivity to criticism"
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. It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity.
Oct 14, 2021 · A hypersensitivity reaction is an extreme or unnecessary immune response that the body has to an antigen. There are four different types of hypersensitivity reactions....
The meaning of HYPERSENSITIVE is excessively or abnormally sensitive. How to use hypersensitive in a sentence.
hy·per·sen·si·tiv·i·ty. ( hī'pĕr-sen'si-tiv'i-tē ), 1. Abnormal sensitivity, a condition in which there is an exaggerated response by the body to the stimulus of a foreign agent. 2. In endocrinology, an excessive target tissue response to a hormone. Synonym (s): hormone hypersensitivity.
Jul 24, 2022 · Hypersensitivity is a state of altered reactivity in which the body reacts with an exaggerated immune response to a foreign substance. Hypersensitivity reactions are classified as immediate or delayed ( Type I and Type IV, respectively, in the Gell and Coombs classification of immune responses).
Mar 9, 2022 · A hypersensitivity reaction involves an abnormal response to a foreign body, or an antigen. The body can mount one of four different immune responses to this antigen. The antigen can be anything from a food to a medication. There are four different types of hypersensitivity reactions.
Mar 12, 2022 · 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.
Usually the immune system reaction protects the body and aids healing. However, sometimes the immune system overreacts, or the reaction is misdirected at healthy tissues and causes intense inflammation and damage. These abnormal immune system responses are called hypersensitivity reactions.
Hypersensitivity as an immunological dysfunction is defined as exaggerated or inappropriate response of the immune system, which is mostly targeted at innocuous antigens with consequent tissue damage. Hypersensitivity can be classified into four types; namely, type I (Immediate), type II (antibody-mediated), type III (immune complex-mediated ...
HYPERSENSITIVITY definition: 1. a condition in which the immune system reacts in an extreme way to a substance in the body: 2…. Learn more.
