Tinea Incognito in Korea and Its Risk Factors: Nine-Year Multicenter Survey
Won-Jeong Kim ; Tae-Wook Kim ; Gwang Seong Choi ; Moon-Bum Kim ; Young Suck Ro ; Hee Joon Yu ; Kwang Ho Kim ; Tae Young Yoon ; Seong Jun Seo ; Seok Kweon Yun ; Hai Jin Park ; Jong Keun Seo ; Eung Ho Choi ; Kwang Hoon Lee ; Eun-So Lee ; Jee Ho Choi ; Jun Young Lee ; Kyoung Chan Park ; Sook Kyung Lee ; Ki Ho Kim ; Ai Young Lee ; Hyun Chung ; Kee Suck Suh ; Young Chul Kye ; Kyu Suk Lee ; Mu Hyoung Lee ; Seok-Jong Lee ; Chun Wook Park ; Byung-Soo Kim ; Hyun-Chang Ko ; Hoon-Soo Kim ; Margaret Song ; Je-Ho Mun
Journal of Korean Medical Science, Vol.28(1) : 145~151, 2013
Journal of Korean Medical Science
Tinea incognito (TI) is a dermatophytic infection which has lost its typical clinical appearance because of improper use of steroids or calcineurin inhibitors. The incidence of TI is increasing nowadays. We conducted retrospective review on 283 patients with TI from 25 dermatology training hospitals in Korea from 2002-2010 to investigate the demographical, clinical, and mycological characteristics of TI, and to determine the associated risk factors. More than half (59.3%) patients were previously treated by non-dermatologists or self-treated. The mean duration of TI was 15.0 ± 25.3 months. The most common clinical manifestations were eczema-like lesion, psoriasis-like, and lupus erythematosus-like lesion. The trunk and face were frequently involved, and 91 patients (32.2%) also had coexisting fungal infections. Among 67 isolated strains, Trichophyton rubrum was the most frequently detected (73.1%). This is the largest study of TI reported to date and the first investigational report concerning TI in Korea. We suggest that doctors should consider TI when a patient has intractable eczema-like lesions accompanied by tinea pedis/unguium. Furthermore, there should be a policy change, which would make over-the-counter high-potency topical steroids less accessible in some countries, including Korea.