我科自１９９３年６月～１９９９年４月共诊治婴儿孤独症１８例，现报告如下。１　临床资料１８例中男１１例，女７例；起病年龄＜２岁１０例，２～３岁８例；均符合ＣＣＭＤ－２－Ｒ孤独症诊断标准。临床表现为：（１）社会交往障碍：孤僻离群，缺乏社会性微笑，不能正常交往 Our department from June 1993 to April 1999 were treated 18 cases of infant autism, are as follows. 1 Clinical data 18 males and 11 females, 7 females; onset age <2 years in 10 cases, 2 to 3 years old in 8 cases; all in line with CCMD-2-R autism diagnostic criteria. Clinical manifestations are: (1) social barriers to social mobility: isolated loneliness, lack of social smile, can not be normal interaction