ABSTRACT
Interdigital foot infections are mostly caused initially by dermatophytes, yeasts and less frequently by bacteria. Erythrasma caused by Corynebacterium minutissimum can be confused with superficial mycoses. The aim of the study was to determine the prevalence of the etiologic agents of superficial mycoses and the frequency of Corynebacterium minutissimum in interdigital foot infections. All the samples obtained from the 121 patients with interdigital foot infections were examined directly with the use of 20% potassium hydroxide mounts and Gram stain under the microscope and cultured on Sabouraud's dextrose agar plates. In identification of superficial mycoses, the rate was found to be 14% with the cultural method and 14% with direct microscopic examination. Using a combination of direct microscopic examination and culture, a 33.8% ratio was achieved. In the culture of these samples, the most isolated factor was Trichophyton rubrum (33.7%). In 24 of the patients (19.8%) Corynebacterium minutissimum was detected by Gram staining, in 6 of these patients Trichophyton rubrum was found, Trichophyton mentagrophytes was found in 2 and Trichosporon spp. was found in 1. The examination of interdigital foot lesions in the laboratory, the coexistence of erythrasma with dermatophytes and yeast should be considered.
Subject(s)
Humans , Arthrodermataceae/isolation & purification , Corynebacterium/isolation & purification , Dermatomycoses/epidemiology , Erythrasma/epidemiology , Foot Diseases/epidemiology , Dermatomycoses/microbiology , Erythrasma/microbiology , Foot Diseases/microbiology , Microbiological Techniques , PrevalenceABSTRACT
El eritrasma es una infección superficial de la piel que afecta la capa córnea y es causado por una bacteria grampositiva, Corynebacterium minutissimum. Se presenta como manchas eritematosas a marrón en grandes pliegues y como descamación y maceración en pliegues interdigitales; es asintomática, aunque en algunos casos se acompaña de prurito. El diagnóstico es clínico por luz de Wood que da una fluorescencia rojo coral de las áreas afectadas. Su curso es benigno, aunque persiste si no se da un tratamiento adecuado.
Erythrasma is a superficial skin infection of the stratum corneum caused by a gram-positive bacteria, Corynebacterium minutissimum. It is characterized by reddish-brown areas affecting occluded intertriginous zones such as axillae, inframammary folds, and as irregular scaly patches or macerated lesions on toeweb spaces. It is asymptomatic, though sometimes accompanied by pruritus. Clinical diagnosis is supported by a red fluorescence under Wood s light examination. It is benign, yet persistent if not adequately treated.
Subject(s)
Humans , Erythrasma/diagnosis , Erythrasma/therapy , Diagnosis, Differential , Erythrasma/epidemiology , Erythrasma/microbiology , Corynebacterium Infections/complications , PrognosisABSTRACT
Se comentan los datos históricos, microbiológicos, patógenos y epidemiológicos del eritrasma, así como sus características clínicas y de laboratorio y su tratamiento. El agente causal es Corynebacterium minutissimum y se menciona que el eritrasma es una enfermedad común en nuestro medio, aunque se desconoce su frecuencia real. Es posible que sea mal diagnosticada o poco reportada debido a su relativamente fácil diagnóstico o a su favorable reacción ante los diversos tratamientos existentes
Subject(s)
Humans , Corynebacterium Infections , Corynebacterium Infections/diagnosis , Corynebacterium/pathogenicity , Erythrasma , Erythrasma/diagnosis , Erythrasma/drug therapy , Erythrasma/history , Erythrasma/microbiology , Ultraviolet RaysABSTRACT
La tinción del PAS más DMSO, es un método sencillo y rápido mediante el cual las raspaduras de lesiones de la piel o de la uñas, recogidas con una laminilla a la que se le ha aplicado albúmina de Mayer en su superficie, puede examinarse microscópicamente y determinar con precisión la ausencia o presencia de hongos y de Corynebacterium minutissimum. El método, además, permite obtener preparaciones permanentes