近十几年，我们共收治散发性脑炎84例，现加以分析和讨论。1临床资料1.1一般资料本组病例男48例，女36例。发病年龄最小14岁，最大64岁。冬春季发病52例（61.9％）。无流行病史。1.2症状及体征80倒在发病前有发热及头痛等感冒症状，有些则伴有腹痛、恶心、呕吐等消化道症状。多 Nearly a dozen years, we have treated 84 cases of sporadic encephalitis, are now analyzed and discussed. 1 Clinical data 1.1 General Information The group of 48 males and 36 females. The youngest age of 14 years old, maximum 64 years old. The incidence of winter and spring in 52 cases (61.9%). No epidemiological history. 1.2 Symptoms and signs 80 down before the onset of fever and headache and other cold symptoms, while others are accompanied by abdominal pain, nausea, vomiting and other gastrointestinal symptoms. many