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30 Cards in this Set

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Kerion
Tinea Capitis: a boggy elevated, purulent, inflamed nodule.
Favus
Tinea Capitis: Cutaneous atrophy, scar formation & baldness. (not very common in US)
Tinea Corporis
Can affect all ages. Transmitted through direct contact.
Tinea Corporis
S/Sx
Small to large scaling, sharply marginated plaques in an annular configuration. Lesions may be seen principally on exposed skin forearm and neck.
Tinea Corporis
Dx/tests
KOH prep may reveal septate & branched hyphae.
Tinea Cruris
S/Sx
Pruritus & burning in groin area. Plaques w/scaling sharp margins & central clearing. Lesions seen in adjacent upper thigh & buttock. Usually doesn't involve scrotum.
Tinea Cruris
Dx/tests
KOH prep may reveal septate & branched hyphae.
Tinea Cruris
Clinical Presentations
Predisposing factors include; hot, humid weather, occlusive footwear.
Skin lesions may include; scaling, maceration, vesicles or bullae.
Skin lesion color may be red, silvery white scales.
W/nail involvement they become thick, yellow & cracked.
Tinea Pedis
Clinical Presentations
Trichophyton localizes between the third & forth interdigital spaces & later the sole especially the arch.
Sides of feet & soles are covered w/silvery-white scales.
Tinea Pedis
D/Dx
Erythasma, Interdigital Psoriasis, Hyperkeratosis, Allergic contact dermatitis from shoes, Candida Albicans.
Tinea Pedis
Lab Findings
KOH Prep is positive for septate & branched mycelia.
Fungal Culture produce micosporum, trichophyton, epidemophyton.
Tinea Capitis Rx
Griseofulvin
Tinea Corporis Rx
Griseofulvin
5% Salicycic acid & 5% benzoic acid cream.
Tinea Cruris Rx
Griseofulvin
5% Salicycic acid & 5% benzoic acid cream.
Teina Pedis Rx
Griseofulvin
5% Salicycic acid & 5% benzoic acid cream.
Onychomycosis
Fungal infection of the nails that is very, very difficult to cure.
Causes of Onychomycosis
Usually a Trichophyton fungus (but Candidiasis can also affect nails)
Occurs when the nail is damaged or continously exposed to a warm mosit environment.
Onychomycosis Rx
PO antifungal. Griseofulvin taken 6mos & 40% effective($350).
Terbinafine (Lamisil) 3mos &70% effective ($500).
Pulse dosing allows intermittent therapy for 3mos.
Onychomycosis Tx
Tx is lengthy due to the slow growth of nails.
Toenails grow 1-3mm q month. Fingernails grow 2-4 mm q month. Topical antifungals are available but less successful when used alone. Surgery may be used w/other methods but can be painful & disfiguring.
Onychomycosis Rx Side effects
H/A, rash, nausea, vomiting, stomach upset & rarely reversivle liver damage or blood disorders.
Tinea Versicolor
Chronic asympotomatic fungous infection of the frunk characterized by white or brown macules. More common in young adults & tropical areas.
Tinea Versicolor
Causative Agent
Pityrosporum orbiculare (Malasezzia furfur)
Tinea Versicolor Lesions
May last months to years.
Vary in size.
Dx is done by id (shape of lesions) & identification of fungus.
Tinea Versicolor D/Dx
Vitiligo, Hypomelanosis 2nd to other disorders (pinta, leprosy, psoriasis).
Tinea Versicolor Labs
The hyphae and spores on KOH prep have a "spaghetti & meat balls appearance."
Under Wood's lamp lesions give off a faint yellow green flourescence.
Tinea Versicolor Rx
5% Salicylic acid & 5% benzoic acid cream.
Selenium Sulfide creams (dandriff shampoo)
Imidazole Creams
What to remember about Tinea Versicolor;
Fungous infection of the trunk, white or brown macules.
More common in young adults & tropical areas.
Lesions last months to years.
KOH prep. "spaghetti & meat balls" appearance.
Under woods lamp faint yellow green fluorescence.
What to remember about Onchomycosis;
Fungal infection of nails, very common.
Exposure to warm moist envoironment or damage.
Tx very expensive oral better than topical or surg.
What to remember about Tinea Pedis;
Athletes foot, hot, humid weather, occlusive footwear.
Scaling,maceration, vesicles or bullae. Color may be red or silvery white scales. Nails may become thick, yellow & cracked.
What to remember about Tinea Cruris;
Prurtis & burning in groin, plaques w/ scaling sharp margins & central clearing. Lesions seen in adjacent upper thigh & buttock, not usually on the scrotum. KOH septate & branched hyphae.