近十多年来,国内各地均报告有一类以急性或亚急性起病的脑炎,发病无明显的季节性与地区性,但发病率有逐年增加的趋势。这一类脑炎的病因迄未确定,在命名、诊断和治疗等方面都存在着有待解决的不少问题,值得进一步的探讨。对这类脑炎通常称之为“病毒性脑炎”,可是,在国内关于这类脑炎的报道中,多数都没有提供病毒分离和血清免疫学检查的诊断根据;而从部分尸解的材料发现,临床上某些诊断为病毒性脑炎的患者,病理检查结果却是急性弥漫性脑脊髓炎。还有一些中毒性脑炎,其临床表现也与病毒性脑炎混 In the past decade or so, there have been reports of various types of encephalitis in both acute and subacute onset in China. There is no obvious seasonal or regional incidence, but the incidence has been increasing year by year. The etiology of this type of encephalitis has not been determined, there are many problems to be solved in the aspects of naming, diagnosis and treatment, which are worthy of further discussion. Often referred to as “encephalitis” for such encephalitis, most of the domestic reports on this type of encephalitis do not provide diagnostic basis for virus isolation and serum immunological examination. However, Materials found that some clinically diagnosed patients with viral encephalitis, the pathological examination results are acute diffuse encephalomyelitis. There are some toxic encephalitis, its clinical manifestations are mixed with viral encephalitis