182 results match your criteria: "Tinea Nigra"
Strategies for genetic manipulation of the halotolerant black yeast : ectopic DNA integration and marker-free CRISPR/Cas9 transformation.
Microbiol Spectr
December 2024
Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, USA.
is a halotolerant black yeast commonly found in hypersaline environments. This yeast is also the causative agent of tinea nigra, a superficial mycosis of the palm of the hand and soles of the feet of humans. In addition to their remarkable halotolerance, this black yeast exhibits an unconventional cell division cycle, alternating between fission and budding cell division.
View Article and Find Full Text PDFDermoscopic Examination of Tinea Nigra on the Plantar Foot Unveils a Parallel Ridge Pattern Mimicking Acral-Lentiginous Melanoma.
Med Mycol J
December 2024
Department of Dermatology, Juntendo University Urayasu Hospital.
A man in his thirties patient visited his previous physician with the chief complaint of a pigmented macule on the sole of his left foot that had steadily grown over the past two years. A dermoscopic examination of the lesion showed a parallel ridge pattern (PRP); therefore, acral-lentiginous melanoma (ALM) was suspected, and the patient was referred to our hospital for a more detailed examination. On closer inspection, PRP had a well-defined and irregular border with no variation in color, which is atypical for ALM which is characterized by asymmetrical structure and variation in colors.
View Article and Find Full Text PDFThe Likelihood of Resistant Tinea Capitis Caused by Hortaea Werneckii: A Case Report.
Clin Cosmet Investig Dermatol
November 2024
Department of Dermatology, The Fifth People's Hospital of Hainan Province, Haikou, Hainan, 570206, People's Republic of China.
Article Synopsis
Tinea Nigra.
J Cutan Med Surg
November 2024
Department of Dermatology, Hangzhou Third People's Hospital, Hangzhou, China.
Tinea Nigra: Clinical and Diagnostic Guidance.
Cureus
August 2024
Medical Benefits, Mexican Social Security Institute, Campeche, MEX.
Article Synopsis
- - Tinea nigra is a rare fungal infection that mainly affects the palms and soles, presenting as painless dark spots, which can be mistaken for other skin lesions.
- - A case study of a 64-year-old woman from Yucatan, Mexico, diagnosed with tinea nigra through skin scrapings showed pigmented yeast, leading to successful treatment with topical ketoconazole.
- - The report emphasizes the importance of thorough examinations and a proposed diagnostic algorithm to improve recognition and treatment of tinea nigra, particularly in areas where it is less common.
A Persistent Dark Macule on the Hand of a Hispanic Patient.
Acta Dermatovenerol Croat
December 2023
Fanny Cecilia Cordero-Martinez, MD, Hospital Universitario "Dr. José Eleuterio González", Monterrey, Mexico;
Article Synopsis
- A 38-year-old Hispanic man visited a dermatology clinic for a dark macule on his left hand that he'd had since childhood, which was growing but asymptomatic, and had no other skin lesions.
- A biopsy showed spindle-shaped cells with melanin granules consistent with acquired dermal melanocytosis (ADM), a rare and benign skin condition characterized by the presence of melanocytes in the dermis.
- The patient was informed about the benign nature of ADM and chose not to pursue any treatment, noting that few cases of this specific hand presentation have been reported.
From direct to confocal microscopy for tinea nigra: Time to shift towards in vivo imaging?
J Eur Acad Dermatol Venereol
July 2023
UOC di Dermatologia, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli - IRCCS, Rome, Italy.
Tinea nigra with dermoscopic diagnosis: First autochthonous case in Italy?
J Eur Acad Dermatol Venereol
May 2023
Department of Health Sciences, University of Eastern Piedmont, Novara, Italy.
Tinea Nigra Palmaris.
JAMA Dermatol
December 2022
Department of Dermatology, Motilal Nehru Medical College, Allahabad, India.
The first report of tinea nigra from Iran.
New Microbes New Infect
September 2022
Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Article Synopsis
- Tinea nigra is a rare skin infection caused by a type of fungus, which affects the outer layer of the skin.
- This condition has not been previously documented in Iran.
- The case involves an Iranian boy from Amol who showed brown spots on his left palm, and tests confirmed it was Tinea nigra.
A Special Tinea Nigra Caused by Curvularia lunata: Case Report and Literature Review.
Mycopathologia
June 2022
Department of Dermatology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China.
Article Synopsis
- * The child presented with a rapidly growing pigmented lesion on her palm, which was successfully treated with topical naftifine hydrochloride and ketoconazole cream.
- * This report is notable as it identifies C. lunata as the first documented pathogen for tinea nigra, and it includes a review of existing literature on various causes, characteristics, and treatments of the condition.
Tinea nigra due to Hortaea werneckii in Taiwan.
J Microbiol Immunol Infect
June 2022
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:
Dermoscopy of skin infestations and infections (entomodermoscopy) - Part II: viral, fungal and other infections.
An Bras Dermatol
November 2021
Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
Article Synopsis
- The study involves using entomodermoscopy to identify not just bacterial and infestations, but also viral and fungal skin infections.
- It highlights the role of dermoscopy in assessing conditions like viral warts, molluscum contagiosum, and implications from the COVID-19 pandemic.
- Dermoscopy is also valuable for diagnosing fungal infections and distinguishing them from skin tumors, particularly in cases like verruca plantaris and onychomycosis.
Salinomyces polonicus: A moderately halophilic kin of the most extremely halotolerant fungus Hortaea werneckii.
Fungal Biol
June 2021
W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, PL-31-512, Kraków, Poland. Electronic address:
Article Synopsis
- The study focuses on the Hortaea werneckii lineage, which includes five fungi species, with Hortaea werneckii being the most notable for its halotolerance.
- Researchers isolated two new black yeast strains from a brine source in Poland, determining they belong to this lineage but don't fit into existing categories.
- A new genus named Salinomyces was established for these strains, leading to the introduction of Salinomyces polonicus, and proposed reclassification of Hortaea thailandica as Salinomyces thailandicus.
Tinea nigra: A series of three cases observed in Botucatu, São Paulo.
Rev Soc Bras Med Trop
March 2021
Universidade Estadual Paulista, Faculdade de Medicina, Departamento de Infectologia, Dermatologia, Diagnóstico por Imagem e Radioterapia, Botucatu, SP, Brasil.
Tinea nigra palmaris-associated peritonitis, caused by : The first case report in a peritoneal dialysis patient.
Perit Dial Int
May 2021
Center of Excellence in Kidney Metabolic Disorders, Faculty of Medicine, 26683Chulalongkorn University, Bangkok, Thailand.
Article Synopsis
- The study presents a unique case of peritoneal dialysis patients experiencing peritonitis caused by a black yeast-like fungus that tolerates salty environments.
- The infection was confirmed through genetic testing techniques that analyzed specific regions of the ribosomal RNA gene.
- It's suggested that individuals involved in peritoneal dialysis should wear gloves during bag exchanges if they have visible skin lesions, like tinea nigra on their hands, to prevent potential infections.
Entodermoscopy in the Diagnosis of Tinea Nigra: Two Case Reports.
Dermatol Pract Concept
July 2020
Dermatology Department, Santa Casa Hospital de Porto Alegre, Brazil.
The extremely halotolerant black yeast - a model for intraspecific hybridization in clonal fungi.
IMA Fungus
July 2019
Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000 Ljubljana, Slovenia.
Article Synopsis
- The black yeast species studied is highly adaptable to salt, growing in environments with varying salinity levels, making it a key model for understanding halotolerance in eukaryotic organisms.
- Research indicates this yeast can thrive at elevated temperatures and salinity, particularly in human skin, suggesting a complex interplay between environmental and host factors.
- A comprehensive analysis revealed multiple genotypes across environmental and human strains, but due to the organism's complex genetics, standard sequencing methods faced challenges, pointing to significant genetic diversity and evolutionary history among the strains.
Article Synopsis
- Tinea nigra is a rare skin infection caused by a yeast-like fungus that creates dark patches on the skin, often mistaken for moles or melanoma due to its appearance.
- In a reported case, a 52-year-old woman noticed a painless dark brown patch in her foot that led to diagnostic tests instead of an immediate biopsy.
- Treatment with topical antifungal creams led to complete resolution of the infection, with no recurrence noted at a three-month follow-up.
[Suspicious hyperpigmentation with parallel ridge pattern on acral skin : Three case reports].
Hautarzt
February 2020
Univ.-Klinik für Dermatologie und Venerologie, LKH-Univ. Klinikum Graz, Auenbruggerplatz 8, 8036, Graz, Österreich.
Tinea nigra mimicking acral melanocytic nevi.
IDCases
October 2019
Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
Article Synopsis
- - Tinea nigra is a skin infection from specific fungi, leading to distinct brown-black patches mainly found on the palms and soles.
- - In some Asian countries, similar skin discoloration can be mistaken for serious conditions like acral lentiginous melanoma, which can be dangerous.
- - A case study of a young patient showed a black patch on their palm that was diagnosed through a potassium hydroxide test and successfully treated with topical antifungal medication.
[First autochthonous case report of tinea nigra in Chile].
Medwave
July 2019
Laboratorio de Dermatología, Clínica Alemana de Santiago-Universidad del Desarrollo, Santiago, Chile.
Article Synopsis
- * A case study highlights a Chilean adult who developed palmar tinea nigra without recent travel history, indicating it can occur locally.
- * The patient was successfully treated with oral itraconazole and topical sertaconazole, marking this as the first recorded local case of the infection in Chile.