Correlation between dermoscopy and direct microscopy of morse code hairs in tinea incognito

Moyano, Encarnación; Erchiga, Vicente Crespo; Pilar, Leandro Martínez; García, Silvestre Martínez

doi:10.1016/j.jaad.2015.09.019

Cited by 16 publications

(17 citation statements)

References 3 publications

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“…Morse code hairs develop due to masses of arthroconidia formed at intervals in the hair shaft (dots) which are separated by thinner fragments where only hyphae develop (bars). [8] In our experience, these dermoscopic markers are very characteristic but not found in all patients. Isa et al [9] report the results of dermoscopy in 43 patients with tinea capitis, which were evaluated clinically and with dermoscopy.…”

Section: Discussionmentioning

confidence: 75%

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Can dermoscopy serve as a diagnostic tool in dermatophytosis? A pilot study

Bhat

Keen

Hassan

et al. 2019

Indian Dermatol Online J

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Background:Dermoscopy has been shown to be a useful tool in assisting the noninvasive diagnosis of various general dermatological disorders.Aim:The purpose of the study was to describe the dermoscopic findings in various dermatophytosis.Materials and Methods:This cross-sectional study included 100 clinically diagnosed tinea infections of skin, hair, and nails, which were evaluated using a dermoscope (Dermlite 3 gen DL3N, California USA, 10x).Results:Among 100 patients of dermatophytosis, 69 were males and 31 females. The maximum number of patients had tinea corporis, followed by tinea cruris and tinea capitis. Dermoscopic findings noted in cases of tinea corporis included diffuse erythema, follicular micropustules, and brown spots surrounded by a white-yellowish halo, broken hair, wavy hair, and rare, morse code hair. Dermoscopy of tinea capitis depicted comma hairs, corkscrew hairs, zigzag hairs, and morse code hairs. Proximal jagged edge, spikes, and longitudinal striations were present in the cases of onychomycosis. Dermoscopy of tinea incognito yielded morse code hairs, follicular micropustules, and easily deformable hairs that look weakened and transparent and show unusual bends.Limitations:Dermoscopic findings were not correlated to fungal culture.Conclusion:Dermoscopy can be used as a fast, inexpensive, and noninvasive diagnostic tool to enhance diagnosis of cutaneous fungal infections.

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Section: Discussionmentioning

confidence: 75%

“…Glomez-Moyano et al observed scaly, broken, translucent hairs and morse code hairs in a 57-year-old man with tinea incognito and provided a correlation of this dermoscopic finding with direct microscopy. [8]…”

Section: Discussionmentioning

confidence: 99%

Can dermoscopy serve as a diagnostic tool in dermatophytosis? A pilot study

Bhat

Keen

Hassan

et al. 2019

Indian Dermatol Online J

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“…Concerning dermoscopy of TI, only one paper was published so far indicating that Morse code hair, as well as found in tinea capitis, could be seen in TI too, probably resulting from localized areas of ‘perforating’ fungal invasion of vellus hair also visible with direct microscopy . Conversely, the detection of black dots surrounded by a white halo as a consequence of vellus hair involvement has been previously described as a possible dermoscopic finding in tinea corporis, and it has been indicated as a marker of necessity of systemic antifungal treatment .…”

mentioning

confidence: 99%

Dermoscopy as a useful tool in diagnosis of tinea incognito

et al. 2018

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“…Hace poco se reportó a la dermatoscopia como una opción diagnóstica en áreas con pelo. 17 Al realizar la dermatoscopia se encuentran pelos "en código morse" o en "código de barra", que se describen como pelos con bandas blancas horizontales que se observan, quizá, como producto de la invasión micótica del pelo, causando una destrucción concéntrica parcial de las capas de queratina. 17 Otra técnica diagnóstica reciente y prometedora es la microscopia confocal reflectante, una técnica rápida, que se practica en el consultorio y que permite la observación del estrato córneo y la dermis superficial con detalle casi histológico, 18 y que permite identificar las estructuras micóticas con una sensibilidad comparable al KOH, pero tampoco se encuentra disponible.…”

Section: Discussionunclassified

Tiña incógnita facial. Informe de dos casos

Castro¹,

Hernández²,

Enamorado³

2019

Acta Pediatr Mex

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ANTECEDENTES: La tiña incógnita es una infección dermatofítica, con una morfología modificada debido al uso inapropiado de esteroides tópicos, sistémicos o inhibidores de la calcineurina. Este problema es más frecuente en casos de tiñas faciales y constituye un reto diagnóstico que requiere historia clínica minuciosa, examen físico y estudios complementarios. En países tropicales, en vías de desarrollo, las dermatofitosis son un problema de gran prevalencia debido a múltiples factores: clima cálido, hacinamiento, contacto con animales y malos hábitos de higiene. Honduras no es la excepción y, además de los factores mencionados, la venta de medicamentos sin prescripción favorece la automedicación. Otro factor contribuyente es la no disponibilidad de exámenes de laboratorio en la mayor parte de los centros asistenciales estatales, lo que dificulta la confirmación diagnóstica de una dermatosis.CASOS CLÍNICOS: Se comunican dos casos de tiña facial incógnita en dos pacientes del sexo femenino en edad pediátrica ocasionadas por Trichophyton verrucosum y tratadas con la combinación de antimicóticos tópicos y sistémicos con excelentes resultados.CONCLUSIÓN: Es imporante concientizar a los profesionales de la salud acerca del riesgo del uso inapropiado de esteroides y de inhibidores de la calcineurina en dermatosis eritematoescamosas, sobre todo las faciales.

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Correlation between dermoscopy and direct microscopy of morse code hairs in tinea incognito

Cited by 16 publications

References 3 publications

Can dermoscopy serve as a diagnostic tool in dermatophytosis? A pilot study

Can dermoscopy serve as a diagnostic tool in dermatophytosis? A pilot study

Dermoscopy as a useful tool in diagnosis of tinea incognito

Tiña incógnita facial. Informe de dos casos

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