我院自1986～1988年共收治40岁以下脑梗塞病人43例,现就其病因分析如下。一、一般资料男34例,女9例,年龄11个月～40岁,平均26岁。其中病因明确者26例,无病因可寻者17例(表1)。另按收治顺序随机抽取50例45岁以上同类患者为对照组,其中男32例,女18例,年龄45～79岁,平均61.3岁。 Our hospital from 1986 to 1988 were treated under the age of 40 patients with cerebral infarction in 43 cases, the cause is now analyzed as follows. First, the general information of 34 males and 9 females, aged 11 months to 40 years, an average of 26 years old. Among them, 26 cases were confirmed with etiology, 17 cases were found without etiology (Table 1). According to the order of treatment, 50 cases of the same type of patients over the age of 45 were randomly selected as the control group, including 32 males and 18 females, aged 45-79 years, with an average of 61.3 years.