Las dermatofitosis, entre ellas las tinas de los pies y de las unas, son las micosis superficiales mas frecuentes en el mundo y en Venezuela. Son uno de los principales motivos de consulta dermatologica, constituyendo un verdadero problema de salud publica por su elevada morbilidad. El tratamiento se realiza fundamentalmente por via oral. El objetivo de esta investigacion fue evaluar la respuesta al tratamiento con terbinafina oral, utilizando el esquema diario convencional y comparandolo con el uso de este medicamento los dias lunes, miercoles y viernes, en pacientes con tinea unguis que acudieron a la consulta externa en la Seccion de Micologia Medica del Instituto de Medicina Tropical de la UCV desde 2002 hasta 2010. Se estudiaron las historias medicas de personas con diagnostico de tinea unguis. Los datos obtenidos fueron organizados en una hoja de calculo en Microsoft Excel y se les realizo un analisis porcentual. Se comprobo el diagnostico de dermatofitosis, en 240 casos evaluados integralmente. De estos, 231 fueron tinea unguis. Los resultados de los cultivos fueron: 184 (79.65%) T. rubrum y 47 (20.35%) T. mentagrophytes. 102 (44.15%) recibieron terbinafina diaria por un periodo de 6 a 10 meses con buena evolucion. A 72 (30%) pacientes del otro grupo, la terbinafina se les administro de manera interdiaria, es decir 250 mg lunes, miercoles y viernes por igual periodo de tiempo. La evolucion fue satisfactoria en todos los casos. La modalidad de administrar terbinafina interdiaria, fue exitoso, en el mismo lapso de tiempo que con la dosis original y hasta los momentos no hemos detectado recaidas en este grupo, por lo cual recomendamos este esquema terapeutico. Abstract: Dermatophytoses, among them those of feet and hand nails, are the most frequent superficial mycoses in the world and in Venezuela. They are one of the main reasons for dermatological consultations, constituting a real public health problem due to their high morbility. Treatment is basically done by the oral route. The objective of this investigation was to evaluate response to treatment with oral terbinafine using the conventional daily dose scheme, and comparing it with the use of this drug on Monday, Wednesday and Friday, applied to patients with tinea unguis who attended the outpatient clinic of the Medical Mycology Section of the Institute of Tropical Medicine of Central University of Venezuela between 2002 and 2010. The medical case histories of persons with a tinea unguis diagnosis were studied. The data obtained were organized in a Microsoft Excel spreadsheet and a percentage analysis was carried out. The dermatophytosis diagnosis was confirmed in 240 of the cases evaluated integrally. Of these, 231 were tinea ungis. The culture results were: 184 (79.65%) T. rubrum and 47 (20.35%) T. mentagrophytes. In one group, 102 (44.15%) patients received daily terbinafine during a 6 to 10 months period with good evolution. In the other group, 72 (30%) patients received terbinafine every other day, i.e, 250 mg Mondays, Wednesdays and Fridays during the same time period. Evolution was satisfactory in all cases. The modality of administering terbinafine every other day was successful in the same period of time than with the original dose, and up to now we have not detected relapses in this group, due to which we recommend this treatment scheme.
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