A student on a school trip started sneezing and wheezing soon after reaching the hill station for no explaied reasons. But, on return to the plains, the symptoms disappeared. What is such a response called? How does the body produce it?

Explanation

Beginning of sneezing and wheezing is called allergic response. The allergen stimulate the formation of IgE antibodies which bind the mast cells. Then allergen stimulates antibody bound mast cells to release histamine and serotonin which cause hypersensation.