男婴,20天。第一胎第一产,是月顺产。生后第二天发现面部有数个针尖大至蚕豆大出血点及瘀斑,查血小板数2.5万。当时未予重视,住院前两天发现每次大便均有少量血丝,与大便相混。病后无其它不适。患儿母亲于12岁时患过特发性血小板减少性紫癜,于妊娠4个月时复发,7个月后以强地松、氨肽素等治疗至分娩。体检:一般情况好,面部皮肤可见数个 Baby boy, 20 days. The first birth of the first child, is a month of birth. The second day after birth, there are several large needle tip to broad bean bleeding and ecchymosis, check the number of 25000 platelets. At that time did not pay attention, two days before admission found that each stool has a small amount of bloodshot eyes, mixed with stool. No other discomfort after illness. Children with children at age 12 had idiopathic thrombocytopenic purpura, recurrence at 4 months of gestation, 7 months after treatment with prednisone, aminopeptin, etc. until delivery. Physical examination: the general situation is good, a few visible facial skin