Pathology

The branch of medicine which deals with immune responses associated with disease is termed as Immunopathology. It includes the study of the pathology of an organism, organ system, or disease with respect to the immune system, immunity, and immune responses. According to biology, it refers to damage caused to an organism by its own immune response, as a result of an infection. It could be due to mismatch between pathogen and host species, and often occurs when an animal pathogen infects a human.