Dermoscopy revealing a case of Tinea Nigra*

Criado, Paulo Ricardo; Delgado, Lívia; Pereira, Gustavo Alonso

doi:10.1590/s0365-05962013000100021

Cited by 19 publications

(7 citation statements)

References 7 publications

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“…In 1997, Gupta et al [ 7 ] described the typical dermoscopic aspect of tinea nigra, with pigmented spicules forming a homogeneous, almost reticular aspect. Other authors emphasized that pattern and the use of dermoscopy in the differential diagnosis with melanocytic lesions [ 8 , 9 ]. The dermoscopic examination of our patient's stains revealed pigmented spicules arranged in a pattern similar to that described in those publications.…”

Section: Discussionmentioning

confidence: 99%

Bilateral Tinea Nigra Plantaris with Good Response to Isoconazole Cream: A Case Report

Falcão¹,

Trope²,

Martins³

et al. 2015

Case Rep Dermatol

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Tinea nigra is a superficial fungal infection caused by Hortaea werneckii. It typically affects young individuals as an asymptomatic unilateral macule, from light brown to black on the palms and soles, mainly in tropical and subtropical regions. In 1997, Gupta et al. [Br J Dermatol 1997;137:483-484] described the dermoscopic characteristics of tinea nigra. Topical antifungals with or without keratolytic agents can be used for the treatment. The authors report a case of a 47-year-old man with asymptomatic light brown macules bilaterally on the plantar regions. Dermoscopic examination revealed brownish spicules consistent with the pattern described in the literature. Treatment with isoconazole cream was effective with complete resolution.

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Section: Discussionmentioning

confidence: 99%

Bilateral Tinea Nigra Plantaris with Good Response to Isoconazole Cream: A Case Report

Falcão¹,

Trope²,

Martins³

et al. 2015

Case Rep Dermatol

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“…The lesions appear grossly similar to melanocytic lesions [3]. Utilization of KOH preparation, Wood's lamp, and dermoscopy can distinguish between these two diseases [4]. We present a woman with interdigital tinea nigra without a prior history of melanoma; KOH testing prevented unnecessary biopsy.…”

Section: Introductionmentioning

confidence: 90%

Interdigital Tinea Nigra

Ibraheim

McNally

Tschen

2020

Cureus

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Tinea nigra is an uncommon superficial dermatomycosis precipitated by Hortaea werneckii, a halophilic and halothermic yeast-like fungus capable of producing a melanin-like substance. This pathogen infiltrates the stratum corneum in the setting of microtrauma and produces an asymptomatic brown to black macule or patch that appears similarly to melanocytic nevi or melanoma. We present a case of a 52-year-old woman who presented to clinic several months after developing a painless, nonpruritic dark brown patch in her left foot inside the fourth toe web. The coloration and location of this lesion would typically prompt biopsy; however, Wood's lamp examination and potassium hydroxide (KOH) preparation were pursued first and demonstrated evidence of infection by H. werneckii. The patient was treated with topical clotrimazole cream and miconazole powder for one month, and her lesions cleared completely. Her lesions did not recur at her three-month follow-up appointment.

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“…It usually shows progressive growth, which may be associated with scaling. 28 An important differential diagnosis is made with melanocytic lesions, whether nevi or melanoma. 28 Direct mycological examination reveals tortuous dematiaceous septate hyphae and the etiological agent is isolated in culture, confirming the diagnosis.…”

Section: Fungal Infectionsmentioning

confidence: 99%

Dermoscopy of skin infestations and infections (entomodermoscopy) – Part II: viral, fungal and other infections

Bakos

Leite

Reinehr

et al. 2021

Anais Brasileiros de Dermatologia

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In addition to the infestations and bacterial infections reported in part I, the study of entomodermoscopy also involves descriptions of dermoscopic findings of a growing number of viral and fungal infections, among others. In this article, the main clinical situations in viral infections where dermoscopy can be useful will be described, that is in the evaluation of viral warts, molluscum contagiosum, and even in recent scenarios such as the COVID-19 pandemic. As for fungal infections, dermoscopy is particularly important, not only in the evaluation of the skin surface, but also of skin annexes, such as hairs and nails. The differential diagnosis with skin tumors, especially melanomas, can be facilitated by dermoscopy, especially in the evaluation of cases of verruca plantaris, onychomycosis and tinea nigra.

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Dermoscopy revealing a case of Tinea Nigra*

Cited by 19 publications

References 7 publications

Bilateral Tinea Nigra Plantaris with Good Response to Isoconazole Cream: A Case Report

Bilateral Tinea Nigra Plantaris with Good Response to Isoconazole Cream: A Case Report

Interdigital Tinea Nigra

Dermoscopy of skin infestations and infections (entomodermoscopy) – Part II: viral, fungal and other infections

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