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22 Cards in this Set
- Front
- Back
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Fungal infections of the superficial
stratum corneum with little or no inflammatory response |
Superficial Mycoses
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-Brown/Black macules on palms/soles
-Asymptomatic; only in outer dead layer of skin -dimorphic fungus found What is the dz and etiology? |
Tinea Nigra
Exophiala wernickii |
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-Scaly with hypo or hyperpigmented patches on the neck, torso, or limbs.
--Asymptomatic; only in outer dead layer of skin -Fungus found with short curved, septate hyphae and yeast-like cells (Spaghetti and meatballs) What is the dz and etiology? |
Tinea Versicolor
Malassezia furfur |
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-Superficial fungal infection that appears as cream, yellow or beige nodules along hair shaft
-produces hair breakage What is the dz and etiology |
White Piedra
Trichosporon sp. |
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-Fungal infection of the scalp hair, less often of the beard and rarely of axillary hair
-Hard, gritty, brown/black nodules firmly attached to hair shaft -Tropics Dz and etiology? |
Black Piedra
Piedraia hortae |
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Sp. that Contains asci
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Piedraia hortae
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Three genera of dermatophytes
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Trichophyton
Epidermophyton Microsporum |
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Virulence factor of dermatophytes
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produce keritinase
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-Infection of GLABROUS skin
-ANNULAR lesions with active border that may be pustular or vesicular |
Tinea corporis
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Dermatophytosis of the plantar surface of the feet and toe webs
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Tinea pedis
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Dermatophytosis of the medial upper thighs and the inguinal, pubic, perineal and perianal areas.
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Tinea cruris
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-Hyphal invasion of scalp spreads to hair follicle
-Patches of alopecia, scaling and itching |
Tinea Capitis
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Fungus inside hair shaft
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Endothrix
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Fungus outside hair shaft
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Ectothrix
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-Affects the facial beard area of men
-inflammation characterized by elevated nodules, draining pustules and sinus tracts |
Tinea barbae
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Commonest cause of Onychomycosis (Tinea unguim)
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Trichophyton rubrum
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inflammation produced by chafing of adjacent areas of skin.
Dx? Etiology? |
Intertrigo
Cutaneous Candidiasis |
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-Thorn prick
-Chronic nodular and ulcerative lesions -Follow lymph nodes draining site of infection Dx? and Etiology |
dx: Lymphocutaneous Sporothrichosis
et: Sporothrix schenckii |
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--Chronic, localized cutaneous to
subcutaneous infection –warty nodules at inoculation site with “cauliflower like”appearance --Infected tissue contain sclerotic or muriform bodies Dx? |
Chromoblastomycosis
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--wide spectrum of manifestations involving the skin and deeper tissues.
--Lesions are deforming, swollen with many draining sinuses. Dx? Etiology? |
dx: Mycetoma
Et: ActinoMycetoma (bact) or EuMycetoma (fungus) |
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Fluoresces under Wood's lamp
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Microsporum spp. scalp infections
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Culture medium for fungi
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Sabouraud agar
containing antibiotics and actidone |
