Clinical Immunology and Infectious Diseases

Immunosuppression is to reduce the activation or activation of the immune system. Some parts of the immune system itself have immunosuppression effects on some parts of the immune system, and immunosuppression may be a poor response to treatment in some cases. Usually, a deliberate immunosuppression is done to prevent the body from rejecting the organ transplant. In addition, it is used to treat graft-versus-host disease after bone grafting, or in the treatment of autoimmune diseases such as lupic eusthematosus, rheumatoid arthritis, Sjögren's disease, or Crohn's disease. This is usually done using medications, but may include surgery (splenectomy), plasmapheresis, or radiation. A person who is undergoing immunosuppression, or whose immune system is weak for other reasons (chemotherapy or HIV), is said to be untreated.