Answer:
The correct answer is allergies.
Step-by-step explanation:
Excessive immune response to an antigen is termed as Allergies or hypersensitivity that is occurred due increased inaccurate immune response of our body.
The overreaction or hypersensitivity that is generated by our body usually exerts damage and uncomfortable response to our body.
There are 2 types of Hypersensitivity
1 Immediate type hypersensitivity that occur very fast with respect to an antigen attack.Immediate type hypersensitivity is characterized by the cross linking of antigen with IgE antibody on the Fc receptor of the mast cell which result i the de granulation of basophils and release of histamine.
2 Delayed type hypersensitivity that occur after after several days and months of antigen attack.