Respuesta :
The immune response that cause a sudden drop in blood pressure, rapid pulse, dizziness and narrowing of airways is Anaphylaxis. It also include weak pulse, skin rash and nausea.
It occurs due to the body's natural defense system and overreacting to a trigger. It cause the immune system to release a flood of chemicals that can even cause a shock. It also has the potential to become life threatening.
The symptoms are hives, itching, swollen eyes, lips, tongue or face and difficult breathing. Histamines the substance that is released by the body during allergic reaction.
Histamines is a chemical found in body's cell that cause symptoms of allergies such as nose running and sneezing.
To learn more about histamines here
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