病毒性肝炎是由三种以上嗜肝病毒引起的全身性疾病。其损害虽以肝实质细胞为主,但机体的各系统均可累及。很多异常表现对诊断及预后估价有重要意义。一、急性肝炎异常表现1.皮疹:约有5%病毒性肝炎发生各种类型的皮疹。皮疹多在黄疸前期出现。三分之二为荨麻疹,其余为斑丘疹、疱性红斑、紫癜、猩红热样皮疹。斑疹处可出现色素沉着。部分患者以皮疹作为唯一表现 Viral hepatitis is a systemic disease caused by three or more hepadnaviruses. Although the damage is mainly liver parenchymal cells, but the body’s various systems can be involved. Many abnormalities have important implications for diagnosis and prognosis. First, the abnormal performance of acute hepatitis 1. Rash: about 5% of viral hepatitis occur various types of rash. More rash appears in the jaundice. Two-thirds of urticaria, the remaining rash, blister erythema, purpura, scarlet fever-like rash. Pigmentation may occur at pigmentation. Some patients with the rash as the only manifestation