What are allergens? How do they cause inflammatory responses inside the human body?
The allergens are the substances that cause the hypersensitive reaction of the immune system such as dust, pollen grains, etc. When the person is exposed to an allergen for the first time then no allergy is caused but if they get exposed to allergens frequently then the allergen combines with Ig E on the mast cell resulting in the bursting of the cells and release of Histamines which leads to the inflammatory response. Thus, allergens are said to be weak antigens.
