What is (are) Autoimmune Hepatitis ?
Autoimmune diseases are disorders in which the body's immune system attacks the body's own cells and organs with proteins called autoantibodies; this process is called autoimmunity.
                
The body's immune system normally makes large numbers of proteins called antibodies to help the body fight off infections. In some cases, however, the body makes autoantibodies. Certain environmental triggers can lead to autoimmunity. Environmental triggers are things originating outside the body, such as bacteria, viruses, toxins, and medications.