Mycosis fungoides mf is a clinical diagnosis that requires strong correlation with histopathologic and sometimes molecular findings to exclude benign inflammatory diseases, more aggressive primary cutaneous lymphomas, and extracutaneous lymphomas that can involve the skin. Pdf micosis superficiales superficial mycosis rev asoc. Dermatophytes, or more properly, keratinophilic fungi, produce extracellular enzymes keratinases which are capable of hydrolyzing keratin. Summary white piedra is a superficial, asymptomatic and unusual mycosis of the extrafolicular portion of the hair, whose etiologic agent is trichosporon spp.
It is common in central and south america and southeast asia. Eg aspergillosis, blastomycosis, coccidioidomycosis, cryptococcosis, histoplasmosis. Descargue como pdf, txt o lea en linea desde scribd. Erosion an erosion is a superficial loss of epidermis that generally heals without scarring. Superficial mycosis are a frequent cause of medical consultation in the general and dermatological clinical practice. Pdf guidelines for preventing infectious complications among. When this disease appears for the first time are common relapses, while medical treatment tends to be generally quite long. The most common superficial mycosis is pityriasis versicolor, causing patches of hypo or hyperpigmentation of the neck, shoulders, chest, and back, and caused by lipophilic basidiomycete yeasts of the genus malassezia. Alvarezperez s, mateos a, dominguez l, martineznevado e, blanco jl, garcia me. Cutaneous mycosis article about cutaneous mycosis by the.
Superficial mycoses and dermatophytosis predisposing factors. Pitiriasis versicolor constitutes 20% of the superficial. Conventional mf begins as eczematoid or psoriasiform patches and. Abstract white piedra is a superficial mycosis, asymptomatic illness, unusual or maybe underdiagnosed, whose etiologic agent is trichosporon beigelii. Besides the infections via cvc, other mycoses caused by rhodotorula yeasts. Piedra is a hair disease caused by a fungus, which causes formation of nodules on the hair shaft types include. Mycosis is a fungal infection of animals, including humans. Malassezia furfur exophiala werneckii trichosporon beigelii piedraia hortae 7. Superficial mycosis an overview sciencedirect topics. Systemic mycosis free download as powerpoint presentation. Differential diagnosis of superficial mycosis with dermatological diseases. Biol 4849 medical mycology summer 2006 page 1 of 4 lecture 9. The following are the most common causes of superficial mycosis. White piedra, black piedra, tinea versicolor, and tinea nigra.
Apr 06, 2020 piedra, which means stone in spanish, is an asymptomatic superficial fungal infection of the hair shaft. Mycosis fungoides is an epidermotropic primary cutaneous tcell lymphoma characterized by infiltrates of small to mediumsized t lymphocytes with cerebriform nuclei. Infected hairs develop soft greyishwhite nodules along the shaft. Its structure, growth, diseases, and their treatment. Cutaneous mycoses the identification reactionid patients infected with a dermatophytes may show a lesion, often on the hands, from which no fungi can be recovered or demonstrated. Superficial fungal infections, also called dermatophytosis, are confined to the skin and are caused by microsporum, trichophyton, or. Jan 18, 2015 white piedra softwhite grayish nodules on hair shafts mainly axillae caused by a yeast trichosporum beigelii shaving off infected hairs is satisfactory treatment 28. Mycosis, in humans and domestic animals, a disease caused by any fungus that invades the tissues, causing superficial, subcutaneous, or systemic disease. Associated diseases mycosis fungoides has been described in patients with other haematological disorders. Piedraia causes black piedra and white piedra the disease.
Micologia medicaiskra reyes hernandezmichelle alejandrina quezada piceno235891micosissuperficialespiedra blanca y piedra negra8. Pdf in the past decade, modifications in hct management and supportive care have resulted in changes in. Pdf paul k buxton abc of dermatology fourth edition. In 1865, beigel first described piedra in the human hair. Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world, particularly in the tropics, where heat and humidity provide the ideal conditions for the growth of fungi that cause cutaneous infections. Thousands of classes to help you become a better you. Superficial mycosis symptoms, causes and cure tabletwise. The three most common types of superficial mycoses are dermatophytosis, diseases caused by malassezia and superficial candidiasis, while the least common are tinea nigra, black and white piedra, and the infections caused by nondermatophytic molds. White piedra is a superficial cosmetic fungal infection of the hair shaft caused by trichosporon. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Included in this group are erythrasma, tinea barbae, tinea capitis, tinea corporis, tinea cruris, tinea favosa, tinea pedis, tinea unguium, and trichomycosis axillaris.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Differential diagnosis of superficial mycosis with. Mycoses are common and a variety of environmental and physiological conditions can contribute to the development of fungal diseases. Biol 4849 lecture 9, summer 2006 page 3 of 4 nondermatophytic infections defined as nondermatophytes i. Mixed infection of respiratory tract in a dog caused by. The term mycosis fungoides should be used only for classic cases, characterized by the evolution of patches, plaques, and tumors, or for variants with a similar clinical course. The superficial cutaneous mycoses are usually confined to the outer layers of skin, hair, and nails, and do not invade living tissues. Inhalation of fungal spores or localized colonization of the skin may initiate persistent infections.
These are antibiotic or chemotherapeutic substances that act directly or indirectly on fungi and thus are of therapeutic use in mycoses. Many factors may combine to increase the risk for infection. Of these, dermatophytoses are the most common ones, affecting principally the nail plate and the feet, which represent 70 to 80% of the infections in adult population. The histological spectrum of early mycosis fungoides. A free powerpoint ppt presentation displayed as a flash slide show on id. This chapter will focus on the superficial dermatophytoses. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Superficial mycosis definition of superficial mycosis by.
Cutaneous mycosis fungoides mf, the subtype of cutaneous tcell lymphoma is a clinically and pathologically distinct form of peripheral extra nodal nonhodgkins tcell lymphoma. Black piedra is typically caused by the fungi piedraia hortae and trichosporon ovoides. Superficial, cutaneous, and subcutaneous mycoses superficial mycoses include the following disease classifications. Dizon,md superficial mycoses superficial do not elicit immune response no discomfort cosmetic problems limited to stratum. It describes the great variability of the clinical expression of mycosis fungoides in its early stages as well as the histopathological and immunohistochemical aspects that help with diagnosis. Superficial and cutaneous mycosis flashcards quizlet. Pdf white piedra, black piedra, tinea versicolor, and tinea. The mycosis is basically different diseases caused by microscopic fungi, which tend to multiply on the skin surface superficial mycosis or do so at own organs. Finally, the dosing appendix has merged both adult and pediatric dosing, and provides. It is possible that superficial mycosis shows no physical symptoms and still be present in a patient. White piedra is a chronic superficial mycosis of the hair, caused by trichosporon asahii t. Black piedra black piedra is a nodular superficial fungal infection of the hair shaft caused by piedra hortae, an ascomycetous fungus forming hard black nodules on the shafts of the scalp, beard, moustache and pubic hair.
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