Fungal Infections Of The Skin

Question 0

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

Answer 0

Tines versicolor - malassezia

Question 1

Malassezia ( furufur and globosa) causes what

Answer 1

Tinea (pityriasis) versicolor - superficial mycoses

Question 2

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

Answer 2

Tinea versicolor: malassezia

Question 3

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

Answer 3

Tinea versicolor: malassezia

Question 4

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

Answer 4

Tines nigra: hortaea werneckii

Question 5

Organisms a causing Tines nigra

Answer 5

hortaea werneckii- superficial

Question 6

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

Answer 6

Tinea nigra : hortaea werneckii

Question 7

What are the superficial mycoses

Answer 7

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

Question 8

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

Answer 8

Tinea nigra : hortaea werneckii

Question 9

What causes white piedra and what is is associated with

Answer 9

Trichosporon spp associated with poor hygiene

Question 10

Hyphal with athrocondia and blastoconidia

Answer 10

White piedra : trichosporon spp ( beigelii, inkin)

Question 11

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

Answer 11

.White piedra : trichosporon spp

Question 12

Improved hygiene and haircut are the cure

Answer 12

White and back piedra

Question 13

What causes black piedra and what is is associated with

Answer 13

Piedraia hortae associated with poor hygiene

Question 14

Brown black mold of hyphae and spindle shaped acospores

Answer 14

Black piedra : piedraia hortae

Question 15

Diagnosis is seeing the dark nodule on higher hair shaft

Answer 15

Black piedra : piedraia hortae

Question 16

Cutaneous mycoses are caused by what

Answer 16

dermatophytes : they use keratin as energy

Question 17

Types of dermatophytes

Answer 17

Trichophyton
Epidermophyton
Microsporum

Question 18

This dermatophyte contain no microconidia

Answer 18

Epidermophyton

Question 19

This dermatophyte contain some microconidia

Answer 19

Microsporum

Question 20

This dermatophyte contain many microconidia

Answer 20

Trichophyton

Question 21

The two most common dermatophyte

Answer 21

Trichophyton rubrum and mentsgrophytes

Question 22

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

Answer 22

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

Question 23

Infection of feet

Answer 23

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

Question 24

Infection of the body

Answer 24

Tinea corporis

Question 25

Jock itch

Answer 25

Tinea cruris

Question 26

Nails

Answer 26

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

Question 27

Beard

Answer 27

Tinea barbae

Question 28

What culture do you use to grow dermatophytes

Answer 28

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

Question 29

Three subcutaneous fungal infections

Answer 29

Sporotrichosis Chromoblastomycosis eumycotic mycetoma

Question 30

Causative agent of sporotrichosis

Answer 30

Sporothrix schenkii

Question 31

Thermally dimorphic with conidia that contain melanin

Answer 31

Sporotrichosis: Sporothrix schenkii

Question 32

Rose Pickens disease - north and South America

Answer 32

Sporotrichosis Sporothrix schenkii

Question 33

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

Answer 33

Sporotrichosis Sporothrix schenkii

Question 34

Hyphae at 25 degrees and yeast at 35 degrees

Answer 34

Sporotrichosis Sporothrix schenkii

Question 35

Treatment is saturated potassium or itraconazole

Answer 35

Sporotrichosis Sporothrix schenkii

Question 36

Causative agents of chromoblastomycosis

Answer 36

Cladosporium carrionii Fonsecaea spp Phislophora verrucosa

Question 37

Demariaceous molds all that form muriform cells

Answer 37

Chromoblastomycosis

Question 38

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

Answer 38

Chromoblastomycosis

Question 39

Causative agents for eumycotic mycetoma

Answer 39

Fusarium spp, curvularia. Spp, scedosporium spp.

Question 40

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

Answer 40

Eumycotic mycetoma

Question 41

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

Answer 41

Eumycotic mycetoma

Question 42

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

Answer 42

Eumycotic mycetoma

Question 43

Treatment of this is usually unsuccessful

Answer 43

Eumycotic mycetoma