Immunopathology is a study of clinical pathology that deals with Immune response to a certain disease of an organism. These diseases can come from some of the reasons like the first would be Hypersensitivity whereas, the second kind includes the complication of the immune system which is termed as Autoimmunity. The immune system attacks itself than the antigen as the immune cells are Self-reactive. The third type of complication would be Immunodeficiency, where it lacks the ability to fight with a certain disease.