Venugopal P V, Venugopal T V
Qatif Central Hospital, Saudi Arabia.
Int J Dermatol. 1993 Jan;32(1):39-40. doi: 10.1111/j.1365-4362.1993.tb00961.x.
Tinea capitis is a dermatophyte infection of the scalp, eyebrows, and eyelashes caused by species of Microsporum and Trichophyton. The purpose of this study was to discover the incidence and causal agents of tinea capitis in Saudi Arabia.
Hair roots, skin scrapings, and pus swabs were collected from patients clinically diagnosed with tinea capitis and were processed for fungus.
Of 372 patients with tinea capitis investigated in Saudi Arabia, 240 were found to be positive by direct microscopic examination, and the causal agent was isolated from 237 patients. Tinea capitis accounted for 47.7% of all superficial mycoses, and 97% of it occurred in children below 15 years of age. Inflammatory lesions were found in 35% of cases, and 10 of them presented with kerion celsi. Favus-type lesion was found in one. Microsporum canis was the most common etiologic agent, responsible for 82.3% of the infections. Trichophyton violaceum was the next most common agent (13.9%), followed by M. audouini (2.2%); T. mentagrophytes, T. rubrum, T. verrucosum, and T. simii were isolated from one patient each. This is the first report of T. simii infection in a Saudi man.
Although none of the patients owned pets, the predominance of M. canis may be explained by the large number of cats in the neighborhood. The disappearance of favus due to T. schoenleinii may be due to improved socioeconomic conditions. Our results agreed with two previous reports.
头癣是由小孢子菌属和毛癣菌属引起的头皮、眉毛和睫毛的皮肤癣菌感染。本研究的目的是发现沙特阿拉伯头癣的发病率和病原体。
从临床诊断为头癣的患者中采集发根、皮肤刮屑和脓液拭子，并进行真菌处理。
在沙特阿拉伯调查的372名头癣患者中，240例经直接显微镜检查呈阳性，237例分离出病原体。头癣占所有浅表真菌病的47.7%，其中97%发生在15岁以下儿童。35%的病例发现有炎症性病变，其中10例表现为凯尔西脓癣。发现1例黄癣型病变。犬小孢子菌是最常见的病原体，占感染病例的82.3%。紫色毛癣菌是第二常见的病原体（13.9%），其次是奥杜盎小孢子菌（2.2%）；断发毛癣菌、红色毛癣菌、疣状毛癣菌和西氏毛癣菌各从1例患者中分离出。这是沙特一名男子感染西氏毛癣菌的首次报告。
尽管没有患者养宠物，但犬小孢子菌占优势可能是由于附近有大量猫。许兰毛癣菌引起的黄癣消失可能是由于社会经济条件改善。我们的结果与之前的两份报告一致。
