[Current problems of hepatitis].

New findings have been made in recent years on the various forms of the hepatitis virus in terms of disease course, its etiopathogenetic link with comorbidities and the definition of new forms in Central Europe. Epstein-Barr virus (EBV)- and cytomegalovirus (CMV)-induced hepatitis may occur in the so-called sero-negative group of hepatitis and direct demonstration of the viral genome in paraffin liver tissues is required to confirm the diagnosis. Since diagnosis of autoimmune hepatitis in daily practice may be difficult, a scoring system with simplified criteria has recently been developed.