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目的调查该医学院新生干性皮肤者面部人体蠕形螨的感染情况,并分析人体蠕形螨感染的影响因素,为特定人群蠕形螨的防治提供依据。方法对部分新生进行问卷调查,并对干性皮肤者面部蠕形螨的感染进行调查,采用透明胶带粘贴过夜法查螨虫。胶带置于光镜下检查,阳性片计数虫数并进行虫种鉴定。结果共调查804名学生,其中干性皮肤者108名,占13.4%。干性皮肤者面部蠕形螨感染情况如下,感染率为22.2%(24/108),单纯毛囊蠕形螨感染占66.7%(16/24),单纯皮脂蠕形螨感染占16.7%(4/24),二者差异显著有统计学意义(x2=21.0,P<0.01),混合感染占16.7%(4/24)。轻度感染占100%。鼻侧感染58.3%(14/24)较额部41.7%(10/24)、鼻尖为0,前二者与鼻尖差异有统计学意义(x2=7.61,P<0.01)。结论该校新生干性皮肤者人体蠕形螨普遍,但均为轻度感染,毛囊蠕形螨感染高于皮脂蠕形螨,感染以鼻侧、额部为主,感染与生活习惯有关。
Objective To investigate the infection of demodex on human facial skin in newly diagnosed dry skin of medical college and to analyze the influencing factors of demodex infection in human body so as to provide basis for the prevention and treatment of demodex in certain population. Methods Some freshmen were investigated by questionnaire, and the infection of Demodex on the facial skin in dry skin was investigated. The mites were smeared overnight with transparent tape. Tape placed under the light microscope to check the number of positive tablets counting insect species and identification. A total of 804 students were surveyed, of whom 108 were dry skin, accounting for 13.4%. The incidence of facial demodex infection in dry skin was as follows: infection rate was 22.2% (24/108), simple follicular demodex infection was 66.7% (16/24), pure sebaceous mite infection was 16.7% (4 / 24), the difference was statistically significant (x2 = 21.0, P <0.01), mixed infection accounted for 16.7% (4/24). Mild infections account for 100%. The nasal infection was 58.3% (14/24), compared with 41.7% (10/24) in the forehead. The nasal tip was 0, the difference between the former two and the nose was statistically significant (x2 = 7.61, P <0.01). CONCLUSION: Demodex mites are common in dry skin of freshmen of the school, but all are mild infections. Demodex folliculorum infection is higher than that of seborrheic dermatophytes. The infection is mainly on the nasal side and forehead, and the infection is related to living habits.