Hi welcome to HCM... I can understand your concern.... You are having autoimmune hepatitis and joint pain , diabetis could be from it by auto antibodies .. In hepatitis liver affected so glucose metabolism disturbed , so there can be more diabetis ... Anyway you are taking correct treatment with use of azathioprine ... At least for two to three year treatment is needed .... Regular liver enzymes level checked .... If clinical improvemt , laboratory improvement (normalization of liver enzymes ), histological improvement (in biopsy no inflammation ) present than drug can be stopped ... But only after discussion with your treating doctor .. Take low fat diet ... Take care Advise : Gastroenterologist consultation for examination...