Background: Tinea capitis (TC) is a common dermatophyte infection of the scalp that can also involve the eyebrows and eyelashes.Aim: This study aimed to find the causative fungus responsible for TC in Botswana and determine its association with the clinical types of TC.Methods: Samples for potassium hydroxide 10% mounts and fungal cultures were collected in a microbiology laboratory at the National Health Laboratory, Gaborone, Botswana. Dermasel agar and Sabouraud dextrose agar were inoculated with the samples. Lactophenol cotton blue mounts were prepared from the culture-positive samples to study the morphological characteristics.Results: Trichophyton violaceum was found to be the predominant causative organism of TC. Trichophyton tonsurans was isolated from one patient. Both are anthropophilic species.Conclusion: TC was found to be most common in those aged 1–15 years (81%). Of 17 patients in this age group, 16 were younger than 10 years old and one was 14 years old. T. violaceum was the most common dermatophyte species isolated.
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机译：背景：头癣是一种常见的头皮皮肤癣菌感染，也可能涉及眉毛和睫毛。目的：这项研究旨在在博茨瓦纳寻找导致TC的病原真菌，并确定其与TC临床类型的关系。方法：在博茨瓦纳哈博罗内国家卫生实验室的微生物学实验室中收集10％氢氧化钾封固剂和真菌培养物的样品。用样品接种Dermasel琼脂和Sabouraud葡萄糖琼脂。从培养阳性样品中制备了乳酚棉蓝坐垫，以研究其形态特征。结果：紫薇毛癣菌是TC的主要致病菌。从一名患者中分离出毛癣菌。结论：TC在1至15岁的人群中最为常见（81％）。在这个年龄段的17位患者中，有16位年龄在10岁以下，而14岁以下。 T. violaceum是最常见的皮肤真菌种类。
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