Objective To analyze the association between Henoch-Schonlein syndrome (HSP) and Mycoplasma pneumoniae infection (MP) in children. Methods 87 cases with Henoch-Schonlein syndrome and Mycoplasma pneumoniae infection in our department from 2009 to 2012 were analyzed retrospectively. Results 87 patients aged from 2 to 13 were diagnosed with HSP and MP infection, male 48 cases and female 39 cases.42 patients had respiratory infection history and 5 patients had allergic history. All patients were given routine management for HSP and MP infection therapy, and 82 patients had full recovery and 5 showed improvement. Conclusion MP infection can induce HSP, regular anti-MP therapy is important in the treatment of HSP.%目的：探讨儿童过敏性紫癜与肺炎支原体感染的相关性并分析其临床特征.方法：回顾性分析我科2009.1-2012.9收治的87例确诊为过敏性紫癜合并肺炎支原体感染患儿的临床资料，对其临床特征、治疗及转归进行总结.结果：87例过敏性紫癜合并肺炎支原体感染，男性48例，女性39例，发病年龄2-13岁.病前1月有明确呼吸道感染病史的为42例，有过敏史的为5例.所有患者常规给予抗过敏及对症治疗，并给予阿奇霉素正规治疗，治愈82例，好转5例.结论：支原体感染是过敏性紫癜发病因素之一，给予规则、足疗程的抗支原体感染对缩短 HSP 疗程，预防复发尤为重要，大多预后良好.
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