散发性病毒性脑炎是一种非流行性的中枢神经系统病毒感染性疾病。其临床特点以急性或亚急性起病,大都具有发热、精神异常,意识障碍、癫痫发作等主要症候。病理上有脑或脑脊髓实质或伴有脊膜的广泛损害。其病因在国外以单纯疱疹病毒为多见。国内青岛于1957年首先报道,1973年以后全国各地陆续报道,其发病率似有逐年增多趋势,但具体病因尚未明确。现将我院自1970年至1979年收治的散发性病毒性脑炎患者50例作一临床资料 Sporadic viral encephalitis is a non-epidemic central nervous system virus infectious disease. The clinical features of acute or subacute onset, most have fever, mental disorders, disturbance of consciousness, seizures and other major symptoms. Pathological brain or cerebrospinal spinal parenchyma or with extensive damage. The cause of herpes simplex virus in foreign countries is more common. Qingdao, China first reported in 1957, after 1973, reported throughout the country one after another, the incidence appears to have increased year by year, but the specific cause is not yet clear. Now in our hospital from 1970 to 1979 admitted to sporadic viral encephalitis in 50 patients with a clinical data