Question

Allergy is an overreaction of body's immune system. Give reason?

Answer 1

1. When a person who is allergic to a harmless substance, such as dust, mold, or pollen, comes into contact with it, the immune system may overreact by producing antibodies that "attack" the allergen.
2. Wheezing, itching, runny nose, watery or itchy eyes, and other symptoms may occur.