168 results match your criteria Tinea Nigra

A Special Tinea Nigra Caused by Curvularia lunata: Case Report and Literature Review.

Mycopathologia 2022 Jun 4;187(2-3):291-298. Epub 2022 Mar 4.

Department of Dermatology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China.

Tinea nigra is a superficial fungal infection usually caused by Hortaea werneckii (H. werneckii). We report a special case of tinea nigra in an immunocompetent child who developed a unilateral, rapidly growing pigmented lesion on her palm. Read More

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Tinea nigra due to Hortaea werneckii in Taiwan.

J Microbiol Immunol Infect 2021 Dec 30. Epub 2021 Dec 30.

National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan; Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan. Electronic address:

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December 2021

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

An Bras Dermatol 2021 Nov-Dec;96(6):746-758. Epub 2021 Oct 5.

Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.

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. Read More

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November 2021

Salinomyces polonicus: A moderately halophilic kin of the most extremely halotolerant fungus Hortaea werneckii.

Fungal Biol 2021 06 23;125(6):459-468. Epub 2021 Jan 23.

W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, PL-31-512, Kraków, Poland. Electronic address:

A clade where the most halotolerant fungus in the world - Hortaea werneckii, belongs (hereafter referred to as Hortaea werneckii lineage) includes five species: Hortaea werneckii, H. thailandica, Stenella araguata, Eupenidiella venezuelensis, and Magnuscella marina, of which the first species attracts increasing attention of mycologists. The species diversity and phylogenetic relationships within this lineage are weakly known. Read More

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Tinea nigra: A series of three cases observed in Botucatu, São Paulo.

Rev Soc Bras Med Trop 2021;54. Epub 2021 Mar 8.

Universidade Estadual Paulista, Faculdade de Medicina, Departamento de Infectologia, Dermatologia, Diagnóstico por Imagem e Radioterapia, Botucatu, SP, Brasil.

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Tinea nigra palmaris-associated peritonitis, caused by : The first case report in a peritoneal dialysis patient.

Perit Dial Int 2021 05 12;41(3):333-336. Epub 2020 Aug 12.

Center of Excellence in Kidney Metabolic Disorders, Faculty of Medicine, 26683Chulalongkorn University, Bangkok, Thailand.

We report the first case of peritoneal dialysis (PD) patients with peritonitis from , a halotolerant black yeast-like fungus. The pathogen was confirmed by nucleotide sequences of internal transcribed spacer regions of the ribosomal RNA gene. A potential cause of this infection was tinea nigra on the patient's palm. Read More

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Entodermoscopy in the Diagnosis of Tinea Nigra: Two Case Reports.

Dermatol Pract Concept 2020 Jul 29;10(3):e2020065. Epub 2020 Jun 29.

Dermatology Department, Santa Casa Hospital de Porto Alegre, Brazil.

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The extremely halotolerant black yeast - a model for intraspecific hybridization in clonal fungi.

IMA Fungus 2019 8;10:10. Epub 2019 Jul 8.

Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000 Ljubljana, Slovenia.

The polymorphic black yeast (, ) is extremely halotolerant (growth from 0 to 30% [w/v] NaCl) and has been extensively studied as a model for halotolerance in Eukaryotes for over two decades. Its most frequent sources are hypersaline environments and adjacent sea-water habitats in temperate, subtropical and tropical climates. Although typically saprobic, can also act as a commensal coloniser on human skin, causing on hands and soles. Read More

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Interdigital Tinea Nigra.

Cureus 2020 Apr 7;12(4):e7579. Epub 2020 Apr 7.

Dermatology, St. Joseph Dermatopathology, Houston, USA.

Tinea nigra is an uncommon superficial dermatomycosis precipitated by , 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. Read More

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[Suspicious hyperpigmentation with parallel ridge pattern on acral skin : Three case reports].

Hautarzt 2020 02;71(2):154-157

Univ.-Klinik für Dermatologie und Venerologie, LKH-Univ. Klinikum Graz, Auenbruggerplatz 8, 8036, Graz, Österreich.

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February 2020

Tinea nigra mimicking acral melanocytic nevi.

IDCases 2019 15;18:e00654. Epub 2019 Oct 15.

Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.

Tinea nigra is a superficial infection caused by dematiaceous fungi. The clinical skin lesion is characterized by well-circumscribed brown-black macule patches on the palms and soles. In Asia, such pigmentation on these areas can be suggestive of acral lentiginous melanoma, which cause morbidity and mortality. Read More

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October 2019

[First autochthonous case report of tinea nigra in Chile].

Medwave 2019 Jul 17;19(6):e7666. Epub 2019 Jul 17.

Laboratorio de Dermatología, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile.

Tinea nigra is an infrequent superficial mycosis caused by the dematiaceous fungus Hortaea werneckii. It usually occurs in tropical coastal areas, with very few reports in South American countries with temperate climates, generally corresponding to infections imported by travelers. We present the case of a Chilean adult patient, with no previous history of recent trips, with clinical and microbiological background consistent with palmar tinea nigra, treated with oral itraconazole and topical sertaconazole with a favorable response. Read More

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In vitro activity of nine antifungal agents against a global collection of Hortaea werneckii isolates, the agent of tinea nigra.

Int J Antimicrob Agents 2019 Jul 7;54(1):95-98. Epub 2019 May 7.

Centre of Expertise in Mycology, Radboud University Medical Centre/Canisius Wilhelmina Hospital, Nijmegen, the Netherlands; Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, the Netherlands.

The in vitro susceptibility of molecularly identified Hortaea werneckii isolates (n = 37), the causative agent of tinea nigra, originating from clinical and environmental sources was determined for nine antifungal agents. Posaconazole had the lowest geometric mean minimum inhibitory concentration (GM MIC) (0.07 µg/mL), followed by voriconazole (0. Read More

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Tinea nigra: Report of three pediatrics cases.

Rev Chil Pediatr 2018 Aug;89(4):506-510

Clínica Alemana de Santiago, Chile.

Introduction: Tinea nigra is a superficial mycosis caused by Hortaea werneckii. Its clinical characte ristic is the appearance of a blackish brown macula of rapid growth, caused by the pigment produced by the fungus itself. The presence of a dark, fast growing, acral pigmentary lesion causes concern among patients and their treating physician about the possibility of a malignant pigmentary lesion. Read More

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Case of tinea nigra on the sole: Correspondences between dermoscopic and histological findings.

J Dermatol 2019 Jun 14;46(6):e187-e188. Epub 2018 Dec 14.

Department of Dermatology, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan.

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Tinea nigra palmaris: a clinical case in a rural Ethiopian hospital.

Rev Inst Med Trop Sao Paulo 2018 13;60:e52. Epub 2018 Sep 13.

Department of Medicine and Laboratory, Gambo Rural General Hospital, Gambo, Ethiopia.

Tinea nigra is an infrequent, superficial fungal infection, mainly caused by Hortaea werneckii, which is still underreported in Ethiopia. An asymptomatic 62-year-old male patient sought a rural hospital of Ethiopia, showing dark plaques on the palms of both hands. A superficial mycosis was suspected and a direct light microscopic mycological examination from skin scrapings revealed short brownish hyphae. Read More

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October 2018

Fungal diseases in children and adolescents in a referral centre in Bogota, Colombia.

Mycoses 2018 Aug 13;61(8):543-548. Epub 2018 Jun 13.

Dermatology Resident, Fundación Universitaria Sanitas, Centro Dermatológico Federico Lleras Acosta, E.S.E., Bogotá, Colombia.

A cross-sectional descriptive study was conducted at a dermatology referral centre in Bogotá, to estimate the frequencies and aetiologies of mycoses in the population under 18 years of age attending the medical mycology laboratory over a 13-year period (2000-2012). A total of 1337 samples from 1221 patients were evaluated, involving direct examination and culture for 1279 samples, direct examination alone for 50 and culture alone for 8. During the study period, dermatophytosis was diagnosed via culture in 537 cases (40. Read More

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Reflectance confocal microscopy for the diagnosis of tinea nigra.

Clin Exp Dermatol 2018 Apr 28;43(3):332-334. Epub 2017 Dec 28.

Department of Dermatology, Hospital de Santa Maria, Avenida Professor Egas Moniz, 1649-035, Lisbon, Portugal.

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White piedra, black piedra, tinea versicolor, and tinea nigra: contribution to the diagnosis of superficial mycosis.

An Bras Dermatol 2017 May-Jun;92(3):413-416

Dermatology Clinic, Hospital da Irmandade da Santa Casa de Misericórdia de São Paulo - São Paulo (SP) Brazil.

Superficial mycoses are fungal infections restricted to the stratum corneum and to the hair shafts, with no penetration in the epidermis; they are: white piedra, black piedra, tinea versicolor, and tinea nigra. This study presents images of mycological tests performed in the laboratory, as well as exams performed at the authors office, in order to improve the dermatologist's knowledge about the diagnosis of these dermatoses, which are common in many countries. Read More

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January 2018

Reflectance confocal microscopy of tinea nigra: comparing images with dermoscopy and mycological examination results.

An Bras Dermatol 2017 Jul-Aug;92(4):568-569

Dermatology Clinic at Hospital Santa Casa de São Paulo - São Paulo (SP), Brazil.

Tinea nigra is a superficial mycosis whose diagnosis is confirmed by isolating the infectious agent Hortae werneckii through mycological examinations. In vivo reflectance confocal microscopy, initially used in melanocytic dermatosis, has been used with skin infectious diseases to identify the parasite at the cellular level. We report, for the first time in the scientific literature, the use of reflectance confocal microscopy in a case of tinea nigra and compare its findings to dermoscopy and mycological examination results. Read More

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October 2017

Tinea nigra: A diagnostic pitfall.

J Am Acad Dermatol 2016 Dec;75(6):e219-e220

Department of Pathophysiology and Transplantations, University of Milan, IRCCS (Istituto di Ricerca e Cura a Carattere Scientifico) Foundation, Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.

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December 2016

Superficial Phaeohyphomycosis Caused by Aureobasidium melanogenum Mimicking Tinea Nigra in an Immunocompetent Patient and Review of Published Reports.

Mycopathologia 2016 Aug 16;181(7-8):555-60. Epub 2016 Feb 16.

Department of Dermatology, Chang Gung Memorial Hospital, Linkou, No. 5, Fushin Street, Taoyuan, Taiwan.

Aureobasidium pullulans is a ubiquitous black yeast-like fungus belonging to order Dothideales. It was regarded as a contaminant, but is now considered a pathogen causing a wide range of human infections. We report a case of superficial phaeohyphomycosis in an immunocompetent patient with clinical presentations mimicking tinea nigra. Read More

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Tinea nigra on the fingers.

BMJ Case Rep 2015 Dec 7;2015. Epub 2015 Dec 7.

School of Medicine, Sakarya University, Sakarya, Turkey.

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December 2015

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

Case Rep Dermatol 2015 Sep-Dec;7(3):306-10. Epub 2015 Oct 28.

Sector of Dermatology, University Hospital and School of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.

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. Read More

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November 2015

Entodermoscopy: a spotlight on tinea nigra.

Int J Dermatol 2016 Feb 13;55(2):e117-8. Epub 2015 Nov 13.

Department of Dermatology, Kingston Hospital, Surrey, UK.

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February 2016

Dermatoscopy in inflammatory and infectious skin disorders.

G Ital Dermatol Venereol 2015 Oct;150(5):521-31

Dermatology Clinic, University of Catania, A.O.U. Policlinico Vittorio Emanuele, Catania, Italy -

Dermatoscopy is a non-invasive technique that allows a rapid and magnified in vivo observation of the skin surface. By definition, it is performed with handheld devices (dermatoscopes) allowing X10 magnification. More expensive, computer-assisted digital systems (videodermatoscopes) may be equipped with lenses that ensure magnifications up to X1000; in this case the term videodermatoscopy is generally used. Read More

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October 2015

Tinea nigra showing a parallel ridge pattern on dermoscopy.

J Dermatol 2015 May 13;42(5):518-20. Epub 2015 Mar 13.

Noguchi Dermatology Clinic, Kumamoto, Japan; Department of Immunology, Allergy & Vascular Biology, Kumamoto University, Kumamoto, Japan.

An 18-year-old healthy female student noticed a brown macule measuring 21 mm in diameter on the left palm and visited our clinic concerned about a cancerous mole. Dermoscopic examination revealed a brown, fine-dotted and granule-like structure overlapping an amorphous light brown macule. However, unlike previous cases, analysis of the high dynamic range-converted image revealed the parallel ridge pattern frequently observed in malignant melanomas. Read More

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Tinea nigra presenting speckled or "salt and pepper" pattern.

Am J Trop Med Hyg 2014 Jun;90(6):981

A 7-year-old Caucasian female resident of the southern coast of Brazil presented dark spots on the left palm that converged to a unique macule with speckled pattern at about 1 month. The mycological exam and the fungi culture were typical of Hortaea werneckii, the agent of the superficial mycosis Tinea nigra. The patient received butenafine hydrochloride 1% for 30 days, resulting in a complete remission of the lesion. Read More

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Scanning electron microscopy of tinea nigra.

An Bras Dermatol 2014 Mar-Apr;89(2):334-6

Federal University of Pelotas, Pelotas, RS, Brazil.

Tinea nigra is a rare superficial mycosis caused by Hortaea werneckii. This infection presents as asymptomatic brown to black maculae mostly in palmo-plantar regions. We performed scanning electron microscopy of a superficial shaving of a tinea nigra lesion. Read More

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September 2014