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Blue 2012 Fungal

Superficial, Cutaneous, and Subcutraneous Fungal infections

QuestionAnswer
What are the most common fungal organisms associated with superficial fungal infections? Malassezia globosa furfur
What are the most common fungal organisms associated with cutaneous fungal infections? trichohyton, epidermophyton, microsporum
What are the most common fungal organisms associated with subcutaneous fungal infections? fonsecaea pedrosi, cladosporium carrionii, phialophora verrucosa
What is the clinical presentation of pityriasis versicolor? scaly lesions with no inflammatory response
What is the pathogenesis of pityriasis versicolor? lipophilic yeast, sweat, sebum for moisture and nutrition
What is the epidemiology of pityriasis versicolor? tropical (chronic), or summer
What is the clinical presentation of tinea nigra? brown/black macular lesions. Usually on hands or feet. Resumbles melanoma. Non scaling, non inflammatory.
What is the pathogenesis of tinea nigra? brown black pigmented yeasts , exophiala werneckii
What is the epidemiology of tinea nigra? found in soil, shower curtains
What is the clinical presentation of black piedra? infection on external hair shaft, black nodules
What is the pathogenesis of black piedra? piedraia hortae
What is the epidemiology of black piedra? tropical
What is the clinical presentation of white piedra? infection on external hair shaft, white nodules
What is the pathogenesis of white piedra? trichosporon beigelli
What is the epidemiology of white piedra? tropical
What is the clinical presentation of the dermatophytoses? Metabolize keratin, inflammatory response
What is the pathogenesis of the dermatophytoses? trichophyton, epidermophyton, microsporum
What is the epidemiology of the dermatophytoses? ringworm,
What is the clinical presentation of chromoblastomycosis? wart-like califlower, pigmented lesions, usually of the foot
What is the pathogenesis of chromoblastomycosis? fonsecae pedrosi, cladosporium carrionii, phialophora verrucosa
What is the epidemiology of chromoblastomycosis? bare footed workers, tropical disease, soil, may take years to develop
What is the clinical presentation of sporotrichosis? ulcerative papule, spreads via draining lymph channels, nodular granulomas, chronic
What is the pathogenesis of sporotrichosis? sporothrix schenckii, most common in US
What is the epidemiology of sporotrichosis? common in US
What is the clinical presentation of fungal mycetoma? small painless papules and nodules, sinus tract formation leads to spread, deeper tissue infiltration. Can lead to bone destruction over a period of months or years
What is the pathogenesis of fungal mycetoma? pseudoallescheria boydii, madurella mycetopatis
What is the epidemiology of fungal mycetoma? infection via thorns and splinters.
What infection looks like "spaghetti and meatballs?" pityriasis or tinea versicolor
What is the significance of "ids?" papular eruption at a distant sight from the fungal lesions. No fungus is in the lesion, so it is considered a type of allergic reaction to the presence of the fungus
What infection is associated with "copper penny spores?" chromoblastomycosis
What infection is associated with "asteroid bodies?" sporotrichosis
Created by: 583931909