重症病毒性肝炎(简称重症肝炎)是由于急性或亚急性肝坏死以肝功衰竭为主要表现的病毒性肝炎,预后极差,病死率可达70～90％。本病骤发型,发展极速,于发病数小时内即出现肝功衰竭,以致黄疸不显著,而误以为急性精神病或脑膜脑炎。而渐进型,则起病与普通急性黄疸型肝炎(简称普通肝炎)无明显差异,于发病数日后,黄疸进行性加深,病情迅速恶化,发展为重症肝炎,因此常不易预测 Severe viral hepatitis (referred to as severe hepatitis) is due to acute or subacute liver necrosis with liver failure as the main manifestation of viral hepatitis, the prognosis is poor, the mortality rate of up to 70 to 90%. The disease hair style, the development of speed, the incidence of liver failure within hours, resulting in not significant jaundice, and mistaken for acute mental illness or meningoencephalitis. The progressive type, then the onset and common acute jaundice hepatitis (referred to as hepatitis) no significant difference in the incidence of a few days later, progressive jaundice, the rapid deterioration of the disease, the development of severe hepatitis, it is often not easy to predict