Cutaneous Mycoses/Dermatomycoses Flashcards by Gay Amor Tipolo Gacang

Q

Is common fungal skin infection otherwise known as Tinea.

A

Ringworm

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Q

Types of ringworm:

Body

A

Tinea corporis

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Q

Types of ringworm:

Scalp

A

Tinea capitis

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Q

Types of ringworm:

Feet

A

Tinea pedis or athlete’s foot

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Q

Types of ringworm:

Groin

A

Tinea corporis or jock itch

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Q

3 main genera of ringworm:

A

Microsporum
Trichophyton
Epidermophyton

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Q

3 main genera of ringworm:

=affects the hair and skin

A

Microsporum

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Q

3 main genera of ringworm:

=affects the hair, skin and nails

A

Trichophyton

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Q

3 main genera of ringworm:

=affects the skin and nails

A

Epidermophyton

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Q

In ringworm, for nails and skin observes _____

A

hyaline, septate hyphae

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Q

In ringworm, hair, skin and nail culture uses __________ and incubate at RT 4-6 weeks before
reporting

A

mycosel or mycobiotic medium

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Q

Latin noun:
ringworm infection of the head and scalp

A

Tinea capitis

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Q

Latin noun:
=ringworm infection of the inguinal area( e.g. jock itch, gym’s itch, ringworm of the groin)

A

Tinea cruris

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Q

Latin noun:
=ringworm infection of the body

A

Tinea corporis

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Q

Latin noun:

ringworm infection of the beard or mustache (barber’s itch)

A

Tinea barbae

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Q

Onchomycosis is most often due to

A

Trichophyton rubrum and T. interdigitale

Q

Onchomycosis can be present as several different patterns:

A white or yellow opaque streak appears at one side of the nail.

A

Lateral onychomycosis

Q

Onchomycosis can be present as several different patterns:

Scaling occurs under the nail

A

Subungual hyperkeratosis

Q

Onchomycosis can be present as several different patterns:

The end of the nail lifts up. The free edge often crumbles.

A

Distal onycholysis

Q

Onchomycosis can be present as several different patterns:

Flaky white patches and pits appear on the top of the nail plate

A

Superficial white onychomycosis

Q

Onchomycosis can be present as several different patterns:

Yellow spots appear on the half-moon (lunula)

A

Proximal onychomycosis

Q

Macroconidia: Rare, if present “spindle-shaped”
Microconidia: Rare, “leaf-like” or absent
Colony: Downy white to salmon pink

A

Microsporum audonii

Q

Common caused of ringworm in dogs and cats

Characteristic colony: white and fluffy; reverse canary yellow pigment, large thick walled, spindle shaped “boat-shaped”

A

Microsporum canis

Q

Characteristic colony: Mold and cottony light brown “cinnamon powdery color

A

Microsporum gypseum

Characteristic; thick septa, “bamboo” hyphae

Microsporum ferrugineum

Worldwide cause of athletes foot Characteristic Microscopic appearance Macroconidia: “cigar-shaped” 2-cells Microconidia: “grape-like clusters” or “engrappe” lateraly along the hyphae

Tricophyton mentagrophyte

Macroconidia: usually absent; if present “pencil-shaped” 3-8 septa Microconidia: “tear-drop” most commonly borne along the ides of hyphae

Tricopohyton rubrum

Characteristic of skin lesion is CONCENTRIC/RING-SHAPED in appearance Balloon shaped chlamydoconidia

Tricophyton concentricum

Macroconidia: “balloon” forms are seen Microconidia: “tear-drop/ club-shaped” with flat bottons

Tricophyton tonsurans

Macroconidia: rare; but form “rat-tail” type, 3-5 cell, thin walled Microconidia: rare; large and “tear-drop” when seen

Tricophyton verrucosum

Branched tortuous hyphae Chlamydospore are usually aligned in chains Colony; Portwine to deep violet colony

Tricophyton violaceum

Hyphae seen as “favic-chandeliers” Colony: Irregular heaped, smooth white to cream colony with radiating grooves

Tricophyton shoenleinii

Microscopic characteristics: “club-shaped macroconidia” usually formed singly or in clusters No microconidia Colony: Center of the colony tends to be folded and is khaki green, periphery is yellow

Epidermophyton floccosum