Resumen
El término «tiña incógnita» se utiliza para dermatofitosis con caracterÃsticas clÃnicas no habituales, por utilización tópica de corticoides o inmunomoduladores.
Pacientes y métodos: Se exponen 10 casos diagnosticados durante 20 años, con una media de edad de 6,5 años y un tiempo de evolución medio de 2,7 meses.
Resultados: En 3 pacientes existÃa más de un caso familiar, lesiones micropapulosas, pustulosas y descamativas localizadas en la cara, el cuello o las extremidades, T. mentagrophytes en 7 casos y M. canis en uno.
Conclusiones: Las lesiones inusuales o difÃciles de reconocer, tratadas previamente con corticoides o inmunomoduladores tópicos, requieren siempre un estudio micológico.
Abstract
The term tinea incognito is used to refer to dermatophytosis with uncommon clinical characteristics, usually due to topical utilization of corticosteroides or immunomodulators. The purpose of this report was to demonstrate the importance of the clinical history and additional diagnostic procedures in determining the etiology of tinea.
Patients and methods: A total of 10 cases were diagnosed over a 20-year period. The mean age was 6.5 years and the mean duration of disease at inclusion in the study was 2.7 months.
Results: In 3 cases, more than one family member was affected, and micropapular, pustular and desquamated lesions located on face, neck or extremities were identified. The etiological agents were T. mentagrophytes in 7 cases and M. canis in one.
Conclusions: Unusual or difficult to recognize lesions that had been previously treated with corticosteroids or topical immunosuppressive therapy always require a mycological study.
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