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31 Cards in this Set
- Front
- Back
Dermatophytes
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Deep and opportunistic affect the internal organs and the dermis
Superficial affects the stratum corneum, hair and nails |
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Yeast examples
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Candida albicans, pityrosporum ovale/orbicularis, malassezia furfur
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Superficial fungal infections
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invade stratum corneum, hair and nails
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Subcutaneus fungal infections
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involve dermis or subcutaneous tissue, often due to implantation
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Systemic fingal infections
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Dermal or subcutaneous involvement
Deep (true pathogens) Opportunistic - immunocompromised host |
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Tinea unguium affects
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nail
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tinea cruris affects
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groin
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Tinea corporis affects
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body
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tinea manuum affects
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hand
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tinea barbae affects
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beard
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tinea facici affects
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face
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tinea capitis affects
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scalp hair/head
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Tinea Pedis - what is it, how does it present?
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Athletes foot
dry, pruritic, scaling between the toes (4th & 5th) |
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What is macerated tinea pedis?
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white, soggy between 4th and 5th toes
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What is moccasin tinea pedis
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erythema, fine scaling over the entire sole of the foot
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What is inflammatory tinea pedis
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pruritic vesicles and blisters, usually the plantar instep
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Dry tinea pedis treatment
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topical anitfungal
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Macerated tinea pedis
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Aluminum chloride, systemic and topical antifungal
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Tinea Unguium - Characteristics
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Onychomycosis (nail bed infection). If isolated nail, think trauma
Will be seen with toenail and plantar foot involvement "two hand, one foot disease" |
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Tinea Unguium - Clinical presentation
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Onycholysis (separation of nail plate from nail bed), crumbled nail plate, subungual debris, crumbled nail plate
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Tinea Unguium - Three types
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distal subungual - most common
proximal subungual - direct invasion under the proximal nail fold (immunocompromised host) White superficial - direct invasion into the superficial nail plate |
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Tinea Unguium - Treatment
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Topicals not effective, requires systemic antifungal
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Tinea manuum - clinical presenations
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erythema and fine scale
usually one hand two feet, if feet not involved, rethink dx fingernails of affected hand should not be involved |
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Tinea manuum - treatment
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topical if only skin involved
systemic if nails involved |
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Tinea cruris - clinical presentation
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Jock Itch
Inguinal crease and upper, inner thigh, does NOT involve penis or scrotum (distinguishes it from candida) Rare in women |
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Tinea cruris - Treatment
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topical until clear
also threat feet if toenails involved, use a systemic |
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Tinea corporis - Clinical presentation
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Ringworm
Annular patch with distinctive raised red scaling, snake-like border, clearing areas in the center |
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Tinea corporis - most common organism
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Trichophyton tonsurans
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Fungal infections - KOH?
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"if it scales, scrape it"
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Tinea Corporis - treatment
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if superficial - topical
if majocchi's granuloma - systemic rqrd |
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Tinea corporis - majocchi's granuloma
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appears inflammed
raised, red plaque studded with perifollicular pustules distal 1/3 posterior leg in women with tinea pedis, rare in men |