临床资料患儿,女,20天龄。主因头面部红斑10 d,躯干、四肢红斑4 d,于2015年1月26日就诊。10 d前,无明显诱因患儿头面部出现数个环状红斑,上覆少许鳞屑,皮损渐累及躯干及四肢,无发热、喘息等。患儿系第二胎,足月剖宫产,出生时Apgar评分10分。其兄无类似病史。父母非近亲结婚。其母亲有亚急性皮肤型红斑狼疮病史20年,曾口服醋酸泼尼松1~2 Clinical data of children, female, 20 days old. Mainly due to head and face erythema 10 d, trunk, erythema of the limbs 4 d, on January 26, 2015 treatment. 10 days ago, there is no obvious incentive to appear on the head and face of children with a few ring-shaped erythema, a small amount of scales covered, the lesion gradually tired and the trunk and limbs, no fever, wheezing and so on. Children with a second child, full-term cesarean section, Apgar score at birth 10 points. His brother no similar history. Parents marry non-relatives. His mother had a history of sub-acute cutaneous lupus erythematosus for 20 years, had oral administration of prednisone acetate 1 ~ 2