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  • Title: Prevalence and characteristics of Epidermophyton floccosum skin infections: A 12-year retrospective study.
    Author: Nokdhes YN, Leeyaphan C, Jirawattanadon P, Pongkittilar B, Sereeaphinan C, Bunyaratavej S.
    Journal: Mycoses; 2024 Feb; 67(2):e13702. PubMed ID: 38558435.
    Abstract:
    BACKGROUND: Epidermophyton floccosum (E. floccosum), an anthropophilic dermatophyte, is the primary causative agent of skin conditions such as tinea cruris, tinea pedis and tinea corporis. OBJECTIVES: This study aimed to determine the prevalence and characteristics of E. floccosum-induced dermatophytosis, with particular emphasis on the types of infections and demographic profiles. METHODS: In this retrospective study, patient records from the dermatology outpatient clinic were scrutinized, covering the timeframe from January 2009 to December 2020. Eligibility for the study required a dermatophytosis diagnosis verified by microscopic examination and fungal culture. RESULTS: Of the 4669 confirmed dermatophytosis cases, 82 (1.8%) were attributable to E. floccosum infection. The proportions of male and female patients with E. floccosum infections were 50.0% each. The most common presentation was tinea pedis (39.0%), followed by tinea cruris (37.8%) and tinea corporis (26.8%). The mean age at disease onset for tinea cruris was 38.7 ± 18.7 years, which was lower than that for tinea pedis (50.6 ± 14.2 years) and tinea corporis (53.5 ± 16.4 years). However, these age differences were not statistically significant. A continuous decrease in E. floccosum isolation was observed over the study period. CONCLUSIONS: There was a steady decline in the prevalence of E. floccosum dermatophytosis over the 12-year study period. Despite the decreasing trend, tinea cruris, tinea corporis and tinea pedis remained the predominant clinical manifestations of E. floccosum infection.
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