IMMUNOLOGY

Detailed explanation-1: -Anaphylaxis is a sudden and severe allergic reaction that occurs within minutes of exposure. Immediate medical attention is needed for this condition.

Detailed explanation-2: -When a harmless substance such as dust, mold, or pollen is encountered by a person who is allergic to that substance, the immune system may over react by producing antibodies that “attack” the allergen. The can cause wheezing, itching, runny nose, watery or itchy eyes, and other symptoms.

Detailed explanation-3: -An anaphylactic response begins quickly after you come into contact with an allergen. Your body releases a lot of chemicals that are intended to combat the allergen. These chemicals set off a chain reaction of symptoms. Symptoms may begin in seconds or minutes, or a delayed response may occur.