宋鲁彦向承发(华西医科大学附属第二医院)报道:患儿,女,13岁。入院前14天无明显诱因双下肢皮肤出现散在红色斑丘疹,伴左膝关节和双踝关节肿痛,活动稍受限,解成形黑大便约20g。在当地就医,予以地塞米松、葡萄糖酸钙、强地松等治疗,症状无缓解。入院前1天,臀部也出现类似斑丘疹,伴腹泻,呕吐咖啡样物约50ml。入院时查体:T 37℃,P 90/min,R 20/min,BP Song Lu Yan Xiang Cheng (West China Medical University Affiliated Second Hospital) reported: children, female, 13 years old. 14 days before admission no obvious incentive to appear in both lower extremity skin scattered red rash, with left knee joint and double ankle joint swelling and pain, activity limited, deforming black stool about 20g. In the local medical treatment, to dexamethasone, calcium gluconate, pine and other treatment, no symptoms. One day before admission, a similar rash appeared in the buttocks, with about 50ml of diarrhea and vomiting coffee samples. Physical examination on admission: T 37 ℃, P 90 / min, R 20 / min, BP