Tinea nigra, also known as superficial phaeohyphomycosis and Tinea nigra palmaris et plantaris, is a superficial fungal infection, a type of phaeohyphomycosis rather than a tinea, that causes usually a single 1–5 cm dark brown-black, non-scaly, flat, painless patch on the palms of the hands and the soles of the feet of healthy people. There may be multiple spots. The macules occasionally extend to the fingers, toes, and nails, and may be reported on the chest, neck, or genital area. Tinea nigra infections can present with multiple macules that can be mottled or velvety in appearance, and may be oval or irregular in shape. The macules can be anywhere from a few mm to several cm in size.
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| - Tinea nigra (es)
- Tinea nigra (it)
- Teigne noire (fr)
- Grzybica czarna (pl)
- Tinea nigra (en)
- Tinea nigra (pt)
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| - Tinea nigra, también denominada feohifomicosis superficial y Tinea nigra palmaris et plantaris, es un tipo de infección por hongos superficial que produce manchas indoloras de color marrón oscuro a negro denominadas máculas en las palmas de las manos y las plantas de los pies de individuos sanos. Ocasionalmente las máculas se extienden a los dedos de las manos y pies, y uñas y a veces al pecho, cuello o zona genital. Las infecciones de tinea nigra pueden manifestarse mediante múltiples máculas que puede tener un aspecto moteado o aterciopelado, y pueden ser de forma ovalada o irregular. Las máculas pueden medir de unos pocos milímetros a varios centímetros. (es)
- La teigne noire (aussi appelée "phaeohyphomycose superficielle," et "tinea nigra palmaire et plantaire") est une infection fongique superficielle qui se manifeste par des taches brun foncé à noir, indolores, sur la paume des mains ou la plante des pieds. (fr)
- La tinea nigra è una micosi superficiale causata dal fungo Hortaea werneckii. (it)
- A tinea nigra é uma feo-hifomicose superficial rara, de ocorrência mundial, sendo mais prevalente nas áreas tropicais e subtropicais. A doença tem maior incidência em pessoas do sexo feminino. A doença geralmente apresenta-se assintomática, com manifestações clínicas apresentadas como lesões em forma de mácula, aparecendo como uma mancha escura, de coloração castanha ou negra, mais freqüentemente observadas na planta do pé ou na palma da mão, podendo aparecer em outras partes do corpo. (pt)
- Grzybica czarna jest rzadką grzybicą powierzchowną wywoływaną przez dermatofita . (pl)
- Tinea nigra, also known as superficial phaeohyphomycosis and Tinea nigra palmaris et plantaris, is a superficial fungal infection, a type of phaeohyphomycosis rather than a tinea, that causes usually a single 1–5 cm dark brown-black, non-scaly, flat, painless patch on the palms of the hands and the soles of the feet of healthy people. There may be multiple spots. The macules occasionally extend to the fingers, toes, and nails, and may be reported on the chest, neck, or genital area. Tinea nigra infections can present with multiple macules that can be mottled or velvety in appearance, and may be oval or irregular in shape. The macules can be anywhere from a few mm to several cm in size. (en)
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| diagnosis
| - Visualisation, dermoscopy, microscopy and culture (en)
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| symptoms
| - One or more dark brown/black, painless spots on palms or soles (en)
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| treatment
| - Antifungals, scraping the lesion (en)
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| - Micrograph of the fungus Hortaea werneckii, the causative agent of tinea nigra (en)
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| synonyms
| - Superficial phaeohyphomycosis, tinea nigra plantaris, tinea nigra palmaris et plantaris (en)
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| - Tinea nigra, también denominada feohifomicosis superficial y Tinea nigra palmaris et plantaris, es un tipo de infección por hongos superficial que produce manchas indoloras de color marrón oscuro a negro denominadas máculas en las palmas de las manos y las plantas de los pies de individuos sanos. Ocasionalmente las máculas se extienden a los dedos de las manos y pies, y uñas y a veces al pecho, cuello o zona genital. Las infecciones de tinea nigra pueden manifestarse mediante múltiples máculas que puede tener un aspecto moteado o aterciopelado, y pueden ser de forma ovalada o irregular. Las máculas pueden medir de unos pocos milímetros a varios centímetros. (es)
- La teigne noire (aussi appelée "phaeohyphomycose superficielle," et "tinea nigra palmaire et plantaire") est une infection fongique superficielle qui se manifeste par des taches brun foncé à noir, indolores, sur la paume des mains ou la plante des pieds. (fr)
- Tinea nigra, also known as superficial phaeohyphomycosis and Tinea nigra palmaris et plantaris, is a superficial fungal infection, a type of phaeohyphomycosis rather than a tinea, that causes usually a single 1–5 cm dark brown-black, non-scaly, flat, painless patch on the palms of the hands and the soles of the feet of healthy people. There may be multiple spots. The macules occasionally extend to the fingers, toes, and nails, and may be reported on the chest, neck, or genital area. Tinea nigra infections can present with multiple macules that can be mottled or velvety in appearance, and may be oval or irregular in shape. The macules can be anywhere from a few mm to several cm in size. Most cases are caused by Hortaea werneckii, a pigmented fungus, which is a dark yeast found in sewage, soil, rotting vegetation and wood and in places with a high salt content such as moldy salted fish and on beaches, where contact with sand may result in transmission. Infection is by direct contact and the fungus enters and remains in the outer dead layer of skin with little or no skin inflammation. The infection does not invade deeper tissues. Diagnosis is by visualisation, dermoscopy, and microscopy and culture of skin scrapings. Differential diagnosis includes Addison's disease, syphilis, pinta, yaws, melanoma, lentigines, lichen planus of the palms, and . Treatment is with topical Whitfield's ointment or salicylic acid ointment. Topical antifungals or oral itraconazole are other options. Scraping the lesion can be curative. Prevention is by general hygiene measures. It is uncommon. It generally occurs in tropical and subtropical countries of Central and South America, the Caribbean, Europe, South East Asia, Australia and the Far East. The disease was first described by from Brazil in 1891. No cases in animals have been reported. (en)
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