5-CUTANEOUS-FUNGI Flashcards

1
Q
  • Affects the dermis and its appendages (hair follicles, nails)
A

CUTANEOUS FUNGI (DERMATOPHYTES)

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2
Q
  • causes “ring-worm” disease on the skin, hair and nails especially the stratum corneum
A

CUTANEOUS FUNGI (DERMATOPHYTES)

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3
Q
  • an infection of the spaces between the toes
A

Tinea pedis

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4
Q
  • Also known as “athlete’s foot”
A

Tinea pedis

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5
Q
  • Caused by Trichophyton and Epidermophyton
A

Tinea pedis

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6
Q
  • Clinical manifestation: itching and scaling
A

Tinea pedis

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7
Q
  • infection of smooth skin
A

Tinea corporis

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8
Q
  • Also known as “ring worm”
A

Tinea corporis

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9
Q
  • Caused by Microsporum and Trichophyton
A

Tinea corporis

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10
Q
  • Clinical manifestation: circular patches on scaly skin
A

Tinea corporis

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11
Q
  • infection of the nails
A

Tinea unguium

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12
Q
  • Also known as “onychomycosis”
A

Tinea unguium

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13
Q
  • Caused by Microsporum and Trichophyton
A

Tinea unguium

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14
Q
  • Clinical manifestation: yellow discoloration, thickening, and
    progressive destruction of the nails
A

Tinea unguium

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15
Q
  • infection of the scalp
A

Tinea capitis

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16
Q
  • Caused by Microsporum and Trichophyton
A

Tinea capitis

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17
Q
  • Clinical manifestation: circular, bald patches on the
    scalp
A

Tinea capitis

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18
Q
  • infection of beard hair
A

Tinea barbae

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19
Q
  • Also known as “barber’s itch”
A

Tinea barbae

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20
Q
  • Caused by Microsporum and Trichophyton
A

Tinea barbae

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21
Q
  • Clinical manifestation: scaling and skin lesions
A

Tinea barbae

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22
Q
  • infection of the groin
A

Tinea cruris

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23
Q
  • Also known as “jock itch”
A

Tinea cruris

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24
Q
  • Caused by Trichophyton and Epidermophyton
A

Tinea cruris

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25
Q
  • Clinical manifestation: scaling and itching of the groin
    area
A

Tinea cruris

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26
Q

Area Affected
Hair/skin

A

Microsporum

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27
Q

Area Affected
Hair/skin/nails

A

Trichophyton

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28
Q

Area Affected
Skin/nails

A

Epidermophyton

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29
Q

Macroconidia
+

A

Microsporum

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30
Q

Macroconidia
+

A

Epidermophyton

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31
Q

Macroconidia
+

A

Epidermophyton

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32
Q

Microconidia
+

A

Microsporum

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33
Q

Microconidia
Many

A

Trichophyton

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34
Q
A

Epidermophyton

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35
Q

Teleomorph
+

A

Microsporum

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36
Q

Teleomorph
+

A

Trichophyton

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37
Q
A

Epidermophyton

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38
Q

Slow growers

A

Microsporum

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39
Q

SABHI at room temperature: light tan, with a salmon-colored reverse

A

Microsporum

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40
Q
  • SABHI at room temperature: colonies within 7 to 10 days
A

Trichophyton

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41
Q
  • Buff Granular Colonies: rose to tan colored, with a yellow, brown, or red
    reverse within 7 days
A

Trichophyton

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42
Q
  • White Fluffy Colonies: with a colorless to yellow reverse after 10 days
A

Trichophyton

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43
Q

MACROCONIDIA:
- rough/thin walled, spindle-shaped, contain 4-15 cells, and are numerous in
number

A

Microsporum

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44
Q

MICROCONIDIA:
- club-shaped, single, and few in number

A

Microsporum

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45
Q
  • Macroconidia: smooth/thin walled, pencil shaped, contain 3-7 cells, and are
    few in number
A

Trichophyton

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46
Q
  • Microconidia: round to club-shaped in grapelike clusters and are few to
    numerous in number
A

Trichophyton

47
Q
  • Tinea capitis
A

Microsporum audonii

48
Q
  • ectothrix hair infection fragmentation of the mycelium around the hair shaft; outside the hair shaft
A

Microsporum audonii

49
Q
  • common among children
A

Microsporum audonii

50
Q
  • most clinically significant
A

Microsporum audonii

51
Q
  • Gray patch Tinea capitis in children and Tinea corporis (skin)
A

Microsporum canis

52
Q
  • Zoophilic – animals
A

Microsporum canis

53
Q
  • Ectothrix
A

Microsporum canis

54
Q
  • T. capitis, T. corporis
A

Microsporum gypseum

55
Q
  • Geophilic – soil
A

Microsporum gypseum

56
Q
  • MOT: contact w/ infected soil
A

Microsporum gypseum

57
Q
  • Tinea cruris, Tinea manuum (hands), Tinea unguium
A

Epidermophyton flocossum

58
Q
  • Common in camps, athletes, jails and dorms(unorganized areas)
A

Epidermophyton flocossum

59
Q

Wood’s Lamp Positive

A

Microsporum audonii

60
Q

Wood’s Lamp Positive

A

Microsporum audonii

61
Q
  • flat and velvety; tan to light gray with beige or reddish brown reverse
A

Microsporum audonii

62
Q
  • flat with radial grooves
A

Microsporum canis

63
Q
  • cottony
A

Microsporum canis

64
Q

granular, tan to orange or cinnamon- pink obverse and reverse within 5 to 6 days

A

Microsporum gypseum

65
Q
  • SABHI at room temp.: yellow with a tan reverse within 10 days
A

Epidermophyton flocossum

66
Q
  • SDA at room temperature: khaki- yellow with tan reverse
A

Epidermophyton flocossum

67
Q
  • Macroconidia: large and distorted
A

Microsporum audonii

68
Q
  • Microconidia : Terminal intercalary
    vesicles, Pectinate, Racquet
A

Microsporum audonii

69
Q
  • Hyphae: hyaline septate, branched or
    racquet shaped
A

Microsporum canis

70
Q
  • Macroconidia: large spindle shaped,
    asymmetrical beak-shaped apex, 6-
    15 cells
A

Microsporum canis

71
Q
  • Microconidia: single-celled
A

Microsporum canis

72
Q
  • Echinulate thick-outer wall: spikey
    or thorny wall
A

Microsporum canis

73
Q
  • Hyphae: hyaline septate
A

Microsporum gypseum

74
Q
  • Macroconidia: elliptical/cucumber-shaped containing 4-6 cells
A

Microsporum gypseum

75
Q
  • Microconidia: clavate
A

Microsporum gypseum

76
Q
  • Macroconidia: smooth/thin walled,
    club-/snowshoe-/padlle-/beaver’s tail
    shaped
A

Epidermophyton flocossum

77
Q
  • Miconidia: negative
A

Epidermophyton flocossum

78
Q

T. manuum, cruris, corporis, capitis, barbae (beard), unguium

A

Trichophyton mentagrophytes

79
Q
  • Hair Perforation or Hair Baiting Test Positive
    o 20 strands of hairs
A

Trichophyton mentagrophytes

80
Q
  • Hyphae: Hyaline septate, branched
A

Trichophyton mentagrophytes

81
Q
  • Macroconidia: cigar shaped
A

Trichophyton mentagrophytes

82
Q
  • Microconidia: grape-like structure
A

Trichophyton mentagrophytes

83
Q
  • favic chandeliers
A

Trichophyton mentagrophytes

84
Q
  • nail head
A

Trichophyton mentagrophytes

85
Q
  • spiral hyphae
A

Trichophyton mentagrophytes

86
Q
  • Hair Perforation Test Negative
A

Trichophyton rubrum

87
Q
  • PDA: forms deep red reverse
A

Trichophyton rubrum

88
Q
  • Differential culture media
A

Trichophyton rubrum

89
Q
  • Macroconidia: pencil shaped; large with blunt distal end with a flat base
A

Trichophyton rubrum

90
Q
  • Microconidia: tear drop borne en thryses
A

Trichophyton rubrum

91
Q

Tinea favosa (favus)

A

Trichophyton schoenleinii

92
Q

Hyaline: Favic chandelier, hyaline septate

A

Trichophyton schoenleinii

93
Q
  • black dot Tinea capitis
A

Trichophyton tonsurans

94
Q
  • Hyphae: spiral with terminal swellings
A

Trichophyton tonsurans

95
Q
  • Macroconidia: short and blunt
A

Trichophyton tonsurans

96
Q
  • Microconidia: truncate (cut-
    off); matchstick
A

Trichophyton tonsurans

97
Q
  • Hair Perforation Test Negative
A

Trichophyton verrucosum

98
Q
  • SDA or PDA: produces chlamydoconidia
A

Trichophyton verrucosum

99
Q
  • Thiamine-enriched media: elongated rat-tail macroconidia
A

Trichophyton verrucosum

100
Q
  • Intercalary vesicle
A

Microsporum audonii

101
Q
  • Pectinate hyphae
A

Microsporum audonii

102
Q
  • Racquet-shaped hyphae
A

Microsporum audonii

103
Q

Spindle-shaped macroconidia of M. canis

A

Microsporum canis

104
Q

Round tip, flat base macroconidia of M. gypseum

A

Microsporum gypseum

105
Q
  • Macroconidia of E. floccosum
A

Epidermophyton flocossum

106
Q
  • Snowshoes
A

Epidermophyton flocossum

107
Q

-Beaver’s tail

A

Epidermophyton flocossum

108
Q

Cigar-shaped macroconidia of T. mentagrophytes

A

Trichophyton mentagrophytes

109
Q
  • Pencil-shaped macoconidia of Trichophyton rubrum
A

Trichophyton rubrum

110
Q
  • Tear drop-shaped microconidia of Trichophyton rubrum
A

Trichophyton rubrum

111
Q

Tinea favosa

A

Trichophyton schoenleinii

112
Q
  • matchstick shaped microconidia of Tricophyton tonsurans
A

Trichophyton tonsurans

113
Q
  • Black dot tinea capitis
A

Trichophyton tonsurans