大多数慢性活动性肝炎(CAH)的原因不明,但有些患者看来是病毒性肝炎的继续,以及由于长期应用双醋酚汀类药物、出现自家免疫反应等因素所诱发。关于CAH的发生与HL-A抗原分布的关系也进行了研究,如Mackey等曾报告,CAH中具有 The cause of most chronic active hepatitis (CAH) is unknown, but some patients appear to be a continuation of viral hepatitis and are induced by factors such as long-term use of bisacetam and an autoimmune response. The relationship between the occurrence of CAH and the distribution of HL-A antigens has also been studied as reported by Mackey et al., In CAH