Term
| What are the organisms that cause superficial mycoses, and what condition do they cause? |
|
Definition
Malassezia: tinnea versicolor, seborrheic dermatitis
Exophiala: tinnea nigra |
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|
Term
| Where is Malassezia found? |
|
Definition
normal flora of skin rich in sebaceous glands
it is lipophilic |
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Term
| What organism causes hyper/hypopigmented, easily scaled, macular lesions, usually on the upper torso? |
|
Definition
| malassezia (tinnea versicolor) |
|
|
Term
| What organism causes seborrheic dermatitis? |
|
Definition
|
|
Term
| What organism appears as "spaghetti and meatballs" with KOH staining? |
|
Definition
|
|
Term
| How does seborrheic dermatitis present? |
|
Definition
| pruritic, erythematous, greasy-appearing patches and scales (usually facial) |
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|
Term
| What causes darkened, non-scaling macular lesions on the palms/soles? |
|
Definition
|
|
Term
| What causes hard black nodules on the hair shaft? |
|
Definition
| piedraei hortae (black piedra) |
|
|
Term
| What causes white-creamy yellow soft granules on the hair? |
|
Definition
| white piedra (trichosporon cutaneum) |
|
|
Term
| How are superficial mycoses treated? |
|
Definition
| topical keratinolysic agents and/or antifungals (mecanazole), personal hygiene |
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|
Term
| What organisms are reponsible for tinea capitis? |
|
Definition
t. tonsurans
m. andwinii
m. canis |
|
|
Term
| List the cuteanous mycoses. |
|
Definition
tinea capitis (gray patch ringworm--loss of hair)
tinea pedis (athlete's foot)
tinea cororpis: ringworm of body
tinea cruris: groin (jock itch)
Tinea Unguium: nail (onchomycosis)
tinea barbae: beard |
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|
Term
| What organisms are repsonsible for athlete's foot? |
|
Definition
E. floccosum
T. Rubrum
T. mentagrophytes |
|
|
Term
|
Definition
|
|
Term
t tonsurans
m andwinii
m canis |
|
Definition
|
|
Term
| Which mycoses are keratinophilic, and what are the subtypes? |
|
Definition
| cutaneous mycoses (epidermophyton, trichophyton, microsporum) |
|
|
Term
| What are the 2 types of subcutaneous mycoses? |
|
Definition
sporothrichosis
chloroblastomycosis |
|
|
Term
| How is sporotrichosis transmitted? |
|
Definition
|
|
Term
| Describe the lesion seen with sporotrichosis. |
|
Definition
| subcutaneous nodule --> ulcer |
|
|
Term
| What are some characteristics of chloroblastomycosis? |
|
Definition
slow development of verrucous, cutaneous nodular lesions: cauliflower-like appearance w/intense hyperplasia
sclerotic bodies |
|
|
Term
| What exhibits wart-like growths along lymphatics of leg or feet? |
|
Definition
|
|
Term
| What fungal infection causes elphantiasis? |
|
Definition
|
|
Term
| What causes mucosal fungal infections? |
|
Definition
|
|
Term
| How is candidiasis diagnosed? |
|
Definition
yeast & hyphae
gram (+)
germ tube formation |
|
|
Term
| What are the predisposing risk factors for candidiasis? |
|
Definition
| elderly, infants, endocrine disorders, broad spectrum Abs, burns, IV drug abuse, AIDS, immunodef, leukemia/hemat malignancy, indwelling cath, immunosuppression |
|
|
Term
e. floccosum
t. rubrum
t. mentagrophytes |
|
Definition
|
|
Term
| What is the morphology of candidasis? |
|
Definition
budding yeast
in vivo: dimorphic |
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Term
|
Definition
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