广州地区70例儿童头癣病原学分析

目的 了解6a来广州地区头癣类型及病原菌分布特点.方法 采用病例回顾性分析,对2007年7月～2013年9月来广州市中山大学附属第三医院皮肤科门诊就诊的头癣患儿（平均为6.0±3.6岁）真菌直接镜检、培养及分离鉴定的结果进行分析.结果 70例头癣患儿真菌镜检阳性为69例,阳性率为99％,真菌培养阳性为47例,阳性率为81％.白癣为52例,占74％.病原菌包括犬小孢子菌19例（40％）、须癣毛癣菌13例（28％）、紫色毛癣菌5例（11％）,石膏样小孢子菌3例（6％）,其他病原菌为7例（15％）.其中,4～7岁的头癣患儿为35例,占50％.结论 儿童头癣的主要临床类型为白癣.致病菌以亲动物性犬小孢子菌为主.患儿的主要年龄段为4～7岁.

An analysis of clinical pathogens in 70 infant cases of tinea capitis

Objective To investigate the clinical features of tinea capitis in Guangzhou region.Methods A retrospective analysis of children with tinea capitis was conducted at Outpatient Department of Dermatology,third Affiliated Hospital of Sun Yat-sen University,Guangzhou （July,2007-September 2013）.The patients had a mean age of 6.0 （± 3.6） years.Pathogens were determined by direct microscopic examination and fungal culture.Results Among 70 cases of clinically diagnosed patients with tinea capitis,69 cases were positive for microscopic examination （99 %） and 47 cases were positive for fungal culture （81%）,52 cases are Tinea alba （74%）.The pathogenic stains mainly include 19 strains of Microsporum canis （40%）,13 strains of Trichophyton mentagrophytes （28%）,5 strains of Trichophyton violaceum （11%）,3 strains of Microsporum gypseum （6%）.Other causative pathogens were found in 8 cases （15%）.Among them,4-7-year-old children with tinea capitis account for 50% （35/70）.Conclusion Tinea alba is the main clinical type of tinea capitis in Guangzhou area.Microsporum canis was the most frequent causative pathogen.The main age rang of cases is 4-7 years old.