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Superficial and cutaneous mycoses.

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Superficial and cutaneous mycoses.

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  • December 2, 2022
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  • 2022/2023
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Micoses superficiais e cutâneas


Atividades Práticas De Dermatologia (Pontifícia Universidade Católica de Campinas)




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, lOMoARcPSD|11700591




Micoses superficiais e cutâneas
As micoses de acordo com o nível de invasão tecidual em:
1. Micoses superficiais: representado pelas ceratofitoses, nela os fungos se proliferam
na camada córnea da pele ou haste livre dos pelos
2. Micoses cutâneas: representado pelas dermatofitoses, podem causar mudanças
patológicas no hospedeiro
3. Micoses subcutâeas
4. Micoses profundas ou sistêmicas




Ceratofitoses
PITIRÍASE VERSICOLOR
Doença ocorre principalmente em países com clima quente e úmido.
Há uma predisposição genética do indivíduo à infecção.
AGENTE ETIOLÓGICO
● Malassezia furfur
○ Vive na camada córnea da gordura que o organismo produz
○ Leveduras vivem nas áreas corporais ricas em glândulas sebáceas

QUADRO CLÍNICO
● Manchas ou máculas, múltiplas, confluentes e de cor variável (“versicolor”)
○ Podem ser hipocrômicas, eritematosas ou hipercrômicas acastanhadas
○ A hipocromia ocorre pela barreira física aos raios UV e pela produção de ácido
azelaico pelo metabolismo do fungo, que inibe a tirosinase, que é uma das
enzimas responsáveis pela formação de melanina
● Sinal de Zireri: descamação da lesão ao se esticar a pele
● Sinal da unha ou de Besnier: há descamação fina da lesão ao se raspar a pele com a
unha


Dermatofitoses
São infecções causadas por fungos adaptados à invasão da camada córnea da pele, pelo e




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