What is allergy?

ALLERGY Allergy is defined as altered reaction to the antigen antibody interaction in a person Who is hypersensitive to an offending substance. Allergy is therefore also called hypersensitivity. A person may be hypersensitive to a variety of substances such as chemicals, dust, pollen-grain, hay, fungal spore, fungal hyphae etc. A person who is sensitive to … Read more