Hepatitis means inflammation of the liver. There are many causes of hepatitis. For example, alcohol excess and various viral infections are the common causes of hepatitis. Please read the separate leaflet called Hepatitis to read more about the liver, where it is and what it does, and about other causes of hepatitis.
This is a companion discussion topic for the original article at https://patient.info/digestive-health/hepatitis/autoimmune-hepatitis