患儿,男,4岁,因反复发热二月余,伴及疹、腿痛及活动障碍20余天,外院按脊髓灰质炎治疗无效来诊。病前口角疖肿破溃溢脓,并有“腮腺炎”史,家族史无殊。体温38℃,P100次/分,R28次/分,BP12/6.6Kpa,表情痛苦,精神差,全身皮肤,尤以背部及双下肢膝关节以下,可见散在充血性红色、暗红色斑丘疹和紫癜,紫癜下结节及皮下小结节,结节边界不清,触痛明显,左手背及右手掌 Children, male, 4 years old, due to repeated fever in February, accompanied by rash, leg pain and mobility disorders more than 20 days, outside the hospital polio treatment is invalid. Pre-emphysema carbuncle rupture overflow empyema, and “mumps” history, family history without special. Body temperature 38 ℃, P100 beats / min, R28 beats / min, BP12 / 6.6Kpa, facial expression pain, poor spirits, body skin, especially in the back and lower extremity below the knee, showing scattered congestive red, dark red rash and purpura , Purpura nodules and subcutaneous nodules, unclear nodules, tenderness, left and right palm back