Tinea Nigra

Neves, JS

doi:10.1001/archderm.1947.01520010071008

Cited by 21 publications

(3 citation statements)

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“…Pigmented patches of tinea nigra may be confused with junctional nevi, postinflammatory pigmentation, malignant melanoma, lentigines, Addison's disease, and melanosis of syphilis and pinta. Misdiagnosis of the lesions had led in the past to biopsies or surgical excisions [ 5 ]. It is not necessary to biopsy scaly lesions; a fast diagnosis can be achieved by scraping the stratum corneum with a scalpel blade and KOH preparation, which shows pigmented hyphae, and later can be confirmed by the growth of a dematiaceous mold on culture media.…”

Section: Discussionmentioning

confidence: 99%

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The first report of tinea nigra from Iran

Kelarestaghi

Hashemi²,

Rafat³

et al. 2022

New Microbes and New Infections

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Section: Discussionmentioning

confidence: 99%

“…Thus, dermoscopy can be used to distinguish tinea nigra from melanocytic lesions. The first authentic description of the disease was made by Manson in 1872 in Southern China [ 5 ]. However, so far there is no report of tinea nigra from Iran.…”

Section: Introductionmentioning

confidence: 99%

The first report of tinea nigra from Iran

Kelarestaghi

Hashemi²,

Rafat³

et al. 2022

New Microbes and New Infections

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“…Misdiagnosis of the lesions had led in the past to biopsies or surgical excisions. 10 Dermoscopy, Wood's light, and KOH preparation can be used to differentiate between these two illnesses. 11 Quick information is obtained through direct KOH mount, which shows short, twisted, thick, light brown hyphae.…”

Section: Introductionmentioning

confidence: 99%

Incidence of Hortaea werneckii in a tertiary care centre in Maharashtra

Mehta,

Bhakre,

Kante

et al. 2024

Int J Res Med Sci

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Background: Hortaea werneckii, a melanized yeast-like fungus is the cause of Tinea nigra, a superficial dermatomycosis. The lesions are differential diagnosis of melanocytic lesions. Tinea nigra mainly affects people in the temperate or subtropical climates with well-demarcated, expanding, hyperchromic plaques on the palms or soles. Methods: Skin scrapings from various lesions with suspected fungal aetiology were received after clinical assessment and were subjected to laboratory procedures, including direct KOH (10%) analysis, culture on Sabouraud dextrose agar (SDA), and incubation at 25°C and 37°C for 28 days which was further confirmed by lactophenol cotton blue preparation and slide culture. Results: Out of 295 samples examined, a total number of 15 samples were positive for Hortaea werneckii in the time period of 1st January 2023 to 31st December 2023. 7 patients had lesions on both palmar as well as plantar region (46.66%), 3 on palmar and plantar region each (20%), 1 (6.66%) on scalp and 1 (6.66%) on face and scalp. The skin scrapings were taken and examined in 10% KOH wet mount which showed positivity of 11 (73.33%) samples. The primary isolation of the fungus was done on SDA. Conclusions: Hortaea werneckii is the most common cause of Tinea nigra. Pigmented patches of Tinea nigra may be confused with other inflammatory or neoplastic aetiology. For Tinea nigra, skin scrapings are sufficient for diagnosis by KOH mount and culture on SDA. Generally, the lesions resolve within 2 weeks of adequate treatment. To conclude, a high suspicion should be maintained to timely diagnose the disease, avoid unnecessary invasive investigation and early administration of treatment.

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Dermal Pathology of Superficial Fungus Infections

Graham

Barroso-Tobila²

1971

The Pathologic Anatomy of Mycoses

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Tinea Nigra

Cited by 21 publications

References 0 publications

The first report of tinea nigra from Iran

The first report of tinea nigra from Iran

Incidence of Hortaea werneckii in a tertiary care centre in Maharashtra

Dermal Pathology of Superficial Fungus Infections

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