TYPE I HYPERSENSITIVITY-PATHOGENESIS AND CLINICAL MANIFESTATIONS
Author: Sanketh DS, MDS
The immune system protects the human body against disease by dispatching a bunch of immune cells whenever the body encounters foreign material or antigens. These immune cells or effector cells elicit an inflammatory response in order to remove or eliminate the foreign antigen without causing much damage to the host. However, under certain conditions, the host may elicit an exaggerated or an inappropriate immune response to a foreign antigen causing much damage to host tissues. This exaggerated or inappropriate immune response is termed hypersensitivity. There are four types of hypersensitivity them being Type 1, Type 2, Type 3 and Type 4 hypersensitivity.
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