WVSOM Skin System 2012- Blue Fungal Infections
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| What is the defining feature of Pityriasis Versicolor? | It feeds on sweat and sebum NOT keratin. It is a lipophilic yeast.
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| Does Pityriasis cause an inflammatory response? | NO
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| What is the physical observation of a person with Pitryiasis Versicolor? | Depigmentation/pigmentation
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| What exacerbates Pitryiasis Versicolor? | Humid environments
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| What do anti-fungals target? | They are broad spectrum and target ergosterol in the cell wall of fungi.
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| What does a skin scraping containing fungi appear like after digestion with KOH. | Spaghetti and meatballs
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| What is the organism which causes Pitryasis versicolor? | Malassezia
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| Malassezia causes what diseases? | Pitryasis versicolor, Cradle Cap, Dandruff (seborrheic Dermatitis)
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| What is the treatment for seborrehic Dermatitis | "Azoles" are primary, also treat with selenium sulfide,salicyclic acid, or pyrithione zinc
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| What are the defining features of tinea Nigra? | Brown/black macular lesions on HANDS and FEET. NON-inflammatory
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| What is the defining feature of Exophiala Werneckii? | Brown-black yeasts found in soil and shower curtains.
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| What is the primary treatment of Exophiala werneckii? | Salicylic acid and benzoic acid (whitfield's ointment)
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| What is the defining feature of Piedras?(black and white) | LOCATION; they are located on the external hair shaft.
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| What is the organism which causes black piedra? | Piedraia hortae
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| What is the organism which causes white piedra? | Trichosporon beigelli
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| What is the class of fungal a infections which affect the cutaneous skin? | Tineas
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| What is the food source for the cutaneous Tineas? | Keratin
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| Where is tinea imbriacata located and what are the defining features? | trunk, legs, forearms have CONCENTRIC rings of scales.
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| What is the organism which causes tinea imbricata? | trichophyton CONCENTRICUM (remember concentric rings, concentricum)
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| Where is tinea corporis located? | ringworm of trunk and legs
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| What organisms cause tinea Corporis? | Trichophyton rubrum, microsporum, canis, trichophyton mentagrophytes.
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| What organisms cause Tinea Pedis? | trichophyton rubrum,T. metagrophytes, epidermopyton floccosum
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| what is tinea cruris? | rash and scaling of the inner thighs
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| Define tinea capitis | disease of children which is ectothrix or endothrix and causes hairloss and scaling.
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| what organism causes tinea capitis? | trichophyton tonsurans and schoenleinii and violaceum
Microsporum audouinii
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| where is tinea barbae located? | bearded areas of neck and face
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| what organism causes tinea barbae? | trichophyton verrucosum
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| what is Tinea Unguium? | Fungal infection of the neails that causes thickening and colorization.
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| what organisms cause tinea unguium? | trichophyton rubrum and candida
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| what treatments would you use for tinea unguium? | "Azoles", terbinafine, griseofulvin, tolnaftate
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| What is chromoblastomycosis? | cauliflower like lesions which are typically of the foot.
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| What organisms causes chromoblastomycosis? | fonsecea pedrosoi, cladosporium carrionii
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| What is sporotrichosis? | rose thorn disease; ulcerative papule that spreads via draining lymph channels
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| what causes sporotrichosis? | sporothrix schenckii
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| what is the treatment for sporotrichosis? | SSKI, Azole,Amphotericin B
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| what is mycetoma? | Infection via thorns and splinters which are small papules and nodules. Lymphatics lead to deep tissue infiltration and bone destruction
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| what is the treatment for mycetoma? | surgery or amputation
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