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LAST TEST EVA > Fungal Infections Of The Skin > Flashcards

Fungal Infections Of The Skin Flashcards

0
Q

What mycoses is described as spaghetti and meatballs ( thick walled yeast cells mixed with hyphae)

A

Tines versicolor - malassezia

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1
Q

Malassezia ( furufur and globosa) causes what

A

Tinea (pityriasis) versicolor - superficial mycoses

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2
Q

You see hyper and hypo pigmentation of upper torso and arms that can be scaled .

A

Tinea versicolor: malassezia

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3
Q

Skin lesions may fluoresce under wood lamp and can see spaghetti and meatballs

A

Tinea versicolor: malassezia

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4
Q

A black mold ( demagiaceous) with freq branching hyper (90 degrees)

A

Tines nigra: hortaea werneckii

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5
Q

Organisms a causing Tines nigra

A

hortaea werneckii- superficial

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6
Q

Brown to black NON SCALING , macular lesions usually on palms and soles.

A

Tinea nigra : hortaea werneckii

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7
Q

What are the superficial mycoses

A

Tinea versicolor : malassezia
Tinea nigra: hortaea werneckii
White piedra: trichosporon
Black piedra : piedraia hortae

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8
Q

Use topical Azoles and Whitfield ointment ( salicyclic acid and benzoic acid)

A

Tinea nigra : hortaea werneckii

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9
Q

What causes white piedra and what is is associated with

A

Trichosporon spp associated with poor hygiene

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10
Q

Hyphal with athrocondia and blastoconidia

A

White piedra : trichosporon spp ( beigelii, inkin)

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11
Q

This mycoses surrounds the hair shaft forming a yellow white granules that look like lice

A

.White piedra : trichosporon spp

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12
Q

Improved hygiene and haircut are the cure

A

White and back piedra

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13
Q

What causes black piedra and what is is associated with

A

Piedraia hortae associated with poor hygiene

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14
Q

Brown black mold of hyphae and spindle shaped acospores

A

Black piedra : piedraia hortae

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15
Q

Diagnosis is seeing the dark nodule on higher hair shaft

A

Black piedra : piedraia hortae

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16
Q

Cutaneous mycoses are caused by what

A

dermatophytes : they use keratin as energy

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17
Q

Types of dermatophytes

A

Trichophyton
Epidermophyton
Microsporum

18
Q

This dermatophyte contain no microconidia

A

Epidermophyton

19
Q

This dermatophyte contain some microconidia

A

Microsporum

20
Q

This dermatophyte contain many microconidia

A

Trichophyton

21
Q

The two most common dermatophyte

A

Trichophyton rubrum and mentsgrophytes

22
Q

Name of a hair or scalp infection and most common. Cause

A

Tinea capitis - t. Tonsurans ( endothrix : arthrocondidia in hair)

23
Q

Infection of feet

A

Tinea pedis : e. Floccosum, t. Rubrum, t mentagrophytes

24
Q

Infection of the body

A

Tinea corporis

25
Q

Jock itch

A

Tinea cruris

26
Q

Nails

A

Tinea unguium : onychomycosis - candida, scopulariopsis brevicsulis, scytalidum dimidiatum

27
Q

Beard

A

Tinea barbae

28
Q

What culture do you use to grow dermatophytes

A

Mycoselor mycobiotic agar ( DTM- derm test medium) . Have cycloheximade, chloramphenicol, phenol red, protein and carb sources. - dermis will use the protein and make an alkaline product causing it turn red

29
Q

Three subcutaneous fungal infections

A

Sporotrichosis
Chromoblastomycosis
eumycotic mycetoma

30
Q

Causative agent of sporotrichosis

A

Sporothrix schenkii

31
Q

Thermally dimorphic with conidia that contain melanin

A

Sporotrichosis: Sporothrix schenkii

32
Q

Rose Pickens disease - north and South America

A

Sporotrichosis Sporothrix schenkii

33
Q

Nodules appear at site of infection and spread thru the lymphatics creating additional nodules, which ulcerate

A

Sporotrichosis Sporothrix schenkii

34
Q

Hyphae at 25 degrees and yeast at 35 degrees

A

Sporotrichosis Sporothrix schenkii

35
Q

Treatment is saturated potassium or itraconazole

A

Sporotrichosis Sporothrix schenkii

36
Q

Causative agents of chromoblastomycosis

A

Cladosporium carrionii
Fonsecaea spp
Phislophora verrucosa

37
Q

Demariaceous molds all that form muriform cells

A

Chromoblastomycosis

38
Q

Infections in feet and legs are common and are large wart like lesions that grow into large Cauliflower like growths . Secondary fibrosis and lymphedema is common -> elephantiasis

A

Chromoblastomycosis

39
Q

Causative agents for eumycotic mycetoma

A

Fusarium spp, curvularia. Spp, scedosporium spp.

40
Q

Characterized by the formation of multiple granulomas containing aggregate of fungi known as granules or grains

A

Eumycotic mycetoma

41
Q

Fungal granules made of mixed hypae and chlamydocondia encased in a hard comment like material

A

Eumycotic mycetoma

42
Q

Nodule at initial site of infection that grows. sinus tracts appear on the skin and infection may destroy local tissue And bone

A

Eumycotic mycetoma

43
Q

Treatment of this is usually unsuccessful

A

Eumycotic mycetoma

LAST TEST EVA (7 decks)

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