How is the pathogenesis of autoimmune hepatits?

Environmental agent triggers cascade of T cell events directed at liver Ag, there is a genetic predisposition leading to progressive necroinflammatory and fibrotic process in the liver Potential triggers include (Viruses (Measles, Hep, CMV and EBV), drugs (methyldopa, nitrofuratonin, diclofenac, IFN, minocyclin, atorvastatin), herbal agents (black cohosh, dai-saiko-to)