A severe, widespread allergic reaction is known as an anaphylactic reaction. A severe allergic reaction that could be fatal, anaphylaxis. It can happen immediately or after some time.
A torrent of immune system chemicals are released during anaphylaxis, which can result in shock, a drop in blood pressure, and constricted airways that prevent breathing. A skin allergic, a quick, weak pulse, nausea, and vomiting are all warning signs and symptoms. Common triggers include latex, some drugs, some foods, and some insect venom. Called anaphylaxis.
Type IV hypersensitivity reactions can cause disorders like drug hypersensitivity and contact dermatitis. Type IV reactions are further classified into type IVc and type IVd depending on the type of T cell (CD4 T-helper type 1 and type 2 cells) involved and the cytokines/chemokines generated.
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