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77 Cards in this Set

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What are the 2 types of superficial mycoses?
1. Skin infections
2. Hair infections
(what about nail? oh well)
What 2 organisms cause skin infections?
Malassezia furfur
Exophiala werneckii
What does M furfur cause?
What is its morphology like?
-Pityriasis versicolor
-Spaghetti/meatballs
What does Exophiala werneckii cause?
Tinea nigra
What is the name of hair infections with mold?
Black/white piedra
What causes black piedra?
Piedraia hortai
What causes white piedra?
Trichosporon beigelii
Trichosporon cutaneum
What is trichosporon though?
A YEAST
What is tinea capitis?
Ringworm of the hair/face
What is Tinea barbae?
beard
What is Tinea corporis?
body
What is Tinea cruris?
jock itch
What is Tinea unguinum?
onychomychosis - nail inf
What is Tinea pedis?
foot
What is Favus, and what causes it?
A type of tinea capitis, corporis, OR unguinum
-Caused by Trichophyton schoenleinii
What characteristic is used to identify Favus?
Favic chandeliers - anter like hyphae.
Infection types caused by:
-Microsporum
-Trichophyton
-Epidermophyton
Micro = hair/skin
Tricho = hair/skin/nails
Epiderm = skin/nails
What feature identifies:
-Microsporum
-Trichophyton
-Epidermophyton
Micro = tapered macroconidia
Tricho = microconidia
Epiderm = club macroconidia
what are club-shaped conidia called again?
CLAVATE
Name the 3 microsporum spec.
1. Microsporum audounii
2. Microsporum canis
3. Microsporum gypseum
Name the 4 Trichophyton spec.
1. Trichophytn mentagrophytes
2. Trichophyton rubrum
3. Trichophyton tonsurans
4. Trichophyton schoenleinii
What test is used to identify T. mentagrophytes when both it and rubrum are red?
Hair penetration test
Which mold can penetrate infant hair autoclaved and incubated for 2-3 wks?
Trichophyton MENTAGROPHYTES; differentiate from T. rubrum.
What instrument is used to see tinea nigra/versicolor?
Wood's lamp
What is necessary to get Malessezia furfur to grow?
Overlaying with mineral oil.
What organism causes tinea capitis?
Trichophyton tonsurans; endemic in latin america.
Other than hair penetration what seperates T. rubrum from mentagrophytes?
Urease test;
Mentagrophytes = pos
Rubrum = neg
How do you differentiate the microsporum species?
By their macroconidia;
-audouinii has FEW
-canis has pointy ends, echinulate, and thick walls
-gypseum has rounded ends, fewer septations, thin walls
What 4 things distinguish microsporum audouinii?
1-lack of macroconidia
2-intercalcary
3-terminal, pointed chlamydoconidia
4-pectinate hyphae
How are microsporum species distinguished macroscopically
COLOR
-audouinii = off white front, ORANGE BACKSIDE
-canis = white front, yellow backside
-gypseum = buff to tan
make sure to finish this.
ok
MALASSEZIA FURFUR
WHAT IS IT?
malessezia furfur
WHAT IS IT?
tinea nigra
WHAT IS IT?
tinea nigra
WHAT IS IT?
tinea nigra, caused by exophiala werneckii
WHAT IS IT?
tinea nigra, caused by exophiala werneckii
WHAT IS IT?
tinea capitis
WHAT IS IT?
tinea capitis
WHAT IS IT?
tinea capitis
WHAT IS IT?
tinea barbae
WHAT IS IT?
tinea corporis
WHAT IS IT?
tinea unguinum (onychomycosis)
WHAT IS IT?
tinea pedis
WHAT IS IT?
epidermophyton floccosum
WHAT IS IT?
epidermophyton floccosum
WHAT IS IT?
epidermophyton floccosum
WHAT IS IT?
Microsporum auduinii
-off white front
-orange reverse
WHAT IS IT?
Microsporum audouinii
-Intercalcary
-Terminal chlamydoconidia
WHAT IS IT?
Microsporum audouinii
-Intercalcary
-Terminal chlamydoconidia
WHAT IS IT?
Microsporum canis
-White front
-Yellow reverse
WHAT IS IT?
Microsporum canis
-White front
-Yellow reverse
WHAT IS IT?
Microsporum canis
-Pointed, echinulate macrocon
-Thick walls, 6+ septations
WHAT IS IT?
microsporum canis
WHAT IS IT?
microsporum gypseum
-buff to tan
WHAT IS IT?
microsporum gypseum
-buff to tan
WHAT IS IT?
Microsporum gypseum
WHAT IS IT?
microsporum gypseum
WHAT IS IT?
microsporum gypseum
WHAT IS IT?
Trichophyton mentagrophytes
-downy form
WHAT IS IT?
Trichophyton mentagrophytes
-Downy form with
-BEDSPRING HYPHAE
-tearshaped microconidia
WHAT IS IT?
Trichophyton mentagrophytes
-Granular form
-pencil macroconidia
-Grapelike microconidia
WHAT IS IT?
Trychophyton mentagrophytes
-granular form
-grape like microconidia
WHAT IS IT?
Trichophyton RUBRUM
rubrum = red reverse
fron = white
WHAT IS IT?
trichophyton rubrum
WHAT IS IT?
trichophyton rubrum
WHAT IS IT?
trichophyton rubrum
WHAT IS IT?
Trichophyton rubrum - numerous sessile tear-shaped microconidia
WHAT IS IT?
infection of trichophyton tonsurans - most common cause of tinea capitis
WHAT IS IT?
trichophyton tonsurans
-very variable microconidia
WHAT IS IT?
trichophyton tonsurans
-so variable!
WHAT IS IT?
trichophyton tonsurans
sooo very variable
WHAT IS IT?
favus, caused by trichophyton schoenlenii - favic chandeliers
WHAT IS IT?
Trichophyton schoenleinii
WHAT IS IT?
trichophyton schoenleinii
WHAT IS IT?
trichophyton shoenleinii
-favic chandeliers
WHAT IS IT?
trichophyton shoenleinii
-favic chandeliers
WHAT IS IT?