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8th > Chapter 160 - Superficial fungal Infection part II > Flashcards

Chapter 160 - Superficial fungal Infection part II Flashcards

1
Q

Local delayed type hypersensitivity response to Trichyophyton test and systemically absorbed fungal antigen

A

Dermatophytid reaction

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2
Q

Criteria for id reaction

A
  1. Dermatophytosis on another part of the body
  2. Absence of fungal elements from id reaction
  3. Resolution of id eruption with clearing if primary dermatophyte infection
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3
Q

50% of all cases of onychodystrophy and 15% in children

A

Onychomycosis

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4
Q

20% of dermatophyte infections among children

A

Onychomycosis

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5
Q

Patients with CD4 count less than ___ tends to have more widespread and involve all 20 nails type of onychomycosis

A

400 cells/ul

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6
Q

40% of onychomycosis have concomitant skin infections, 30% of which is ___

A

Tinea pedis

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7
Q

Dermatophyte infection of the nail

A

Tinea unguium

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8
Q

Fungal infection of the nail caused by dermatophytes, nondermatophyte, mold, yeasts

A

Onychomycosis

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9
Q

Most common form of onychomycosis

A

Distolateral subungual type

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10
Q

Marker of HIV disease

A

Proximal subungual type

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11
Q

White superficial type is usually caused by

A

T. Interdigitalis

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12
Q

On HPx of onychomycosis, hyphae are seen between the nail lamina parallel to surface with predilection for (3)

A

Ventral nail

Stratum corneum of nail bed

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13
Q

Oral antifungal is required for onychomycosis involving the __

A

Matrix

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14
Q

Oral antifungal for onychomycosis ((3)

A

Terbinafine 250mg/day for 6-12 weeks
Itraconazole 200mg/day for 2-3 mos
Or 400mg/ mo for 2-3 mos
Fluconazole 150-300mg/week for 3-12 mos

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15
Q

In vitro fungicidal activity found in Eucalyptus citriodora (4)

A

Thymol
Camphor
Menthol
Oil

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16
Q

Asymptomatic superficial fungal infection of hair shaft

A

Piedra
Or
trichomycosis nodularia

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17
Q

Black piedra is caused by ___ and affects scalp hair

A

Piedra hortae

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18
Q

Matching type

  1. Scalp
  2. Axillary
  3. Genital

A. T. Asahi
B. T Inkin
C. T. Ovoides

A

C
A
B

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19
Q

White piedra affects face, axilla, genitals more than scalp.

True or False

A

Tru

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20
Q

Matching type

  1. Broken hairs
  2. Pseudoparenchyma
  3. Inhibited by cycloheximide

A. Black piedra
B. White piedra

A

A
A
B

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21
Q

Diff of trichomycosis nodularis vs trichomycosis axillaris

A

Trichomycosis axillaris are smaller and fluoresce under a Wood lamp

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22
Q

Curative for piedra

A

Shaving

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23
Q

Common mode of transmission of tinea barbae

A

Exposure to cattle, horses, or dogs

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24
Q

Matching type

  1. Involves the beard area
  2. T. Violaceum
  3. T. Verrucosum
  4. T. Interdigitale
  5. Scarring alopecia
  6. MC clinical presentation

A. Superficial
B. Inflammatory
C. Both
D. None

A 
C
A
B
B
B
B
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25
Q

In tinea barbae, always rule out (2)

A

Herpes simplex

Halogenoderma

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26
Q

Treatment for tinea barbae

A 
Systemic corticosteroids for 1 week
\+ 
Terbinafine 250mg/day x 2-4 weeks
Itraconazole 200mg/day x 2-4 weeks
Fluconazole 200mg/day x 4-6 weeks
Griseofulvin 1g/day x 6 weeks
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27
Q

Tinea capitis is most commonly observed in children between the ages of ___ due to fungistatic effect of ___

A

3 to 14 years old

FA in the sebum

28
Q

Common cause of tinea corporis in adults? In children?

A

T. Rubrum (adults)

M. Canis (children)

29
Q

MC cause of tinea incognito

A

Tinea rubrum

30
Q

Tinea capitis describes dermatophyte infection of hair and scalp caused by Trichophyton and Microsporum except

A

T. Concentricum

31
Q

Even after shedding, hairs may harbor infectious organisms for more than ___

A

1 year

32
Q

Matching type

  1. M. Audouinii
  2. T. Violaceum
  3. T. Tonsurans
  4. M. Canis
  5. M. ferrugineum
  6. T schoenleinii

A. Noninflammatory
B. Black dot
C. Inflammatory
D. Favus

A 
A
B
B
C
A
D
33
Q

Noninflammatory type or gray patch type of tinea capitis often occurs on ___ with ___ alopecia

A

Occiput

Nonscarring

34
Q

Inflammatory type of tinea capitis results in (2)

A

Scarring alopecia

Posterior cervical lymphadenopathy

35
Q

Clinical pearl in diff tinea capitis from other inflamm disorders involving the scalp

A

Posterior cervical lymphadenopathy

36
Q

Tinea capitis often involves __ hairs

A

Mid to late anagen hairs

37
Q

Arthroconidia are usually noted in infected hairs of favus.

True or False

A

False, not noted

38
Q

Topical therapy alone is sufficient for management of tinea capitis.
True or False

A

False, not sufficient

39
Q

For tinea capitis, the ff should be ruled out (2)

A

DLE, syphilis

40
Q

Thrice weekly use of (2) by all household members also reduces transmission by decreasing shedding of spores

A

Ketoconazole 2% shampoo

Selenium sulfide 2.5%

41
Q

DOC for tinea capitis (M. Canis)

A

Griseofulvin 20-25mkday for 6-8 weeks (micro)

42
Q

DOC for tinea capitis (T. Tonsurans)

A

Terbinafine x 2-4 weeks
<20kg: 62.5mg/day
20-40kg: 125mg/day
>40kg: 250mg/day

43
Q

Dermatophytosis of glabrous skin except palms, soles, and the groin

A

Tinea corporis

44
Q

Tinea corporis gladiatorum is caused by

A

T. Tonsurans

45
Q

Superficial and subcutaneous dermatophytic infection involving deeper portions of hair follicles

A

Majocchi granuloma

46
Q

Majocchi granuloma is most commonly caused (3)

A

T. Rubrum
T. Interdigitale
M. Canis

47
Q

Etiologic agent of tinea imbricata

A

Tinea concentricum

48
Q

Second most common dermatophytosis worldwide

A

Tinea cruris

49
Q

Tinea crusis is ___ times more common in men and adults

A

3

50
Q

Tinea cruris with involvement of genitocrural crease and medial upper thigh

A

E. Floccosum

51
Q

Tinea cruris with extension to pubic, perianal, buttock, and lower abdominal areas

A

T. Rubrum

52
Q

Chronic dermatophyte infection of scalp that rarely involves glabrous skin and or nails characterized by thick yellow crusts (scutula) within the hair follicles that lead to scarring alopecia

A

Tinea favosa

53
Q

Most common cause of human favus

A

T. Schoenleinii

54
Q

Tinea nigra is caused by superficial dermatomycosis caused by dematiaceous darkly pigmented

A

Hortaea werneckii

55
Q

Tinea nigra has ___ predilection

A

Female

56
Q

Asymtomatic mottled brown to greenish black macule or patch with minimal to no scale on palms and soles and darkest at advancing border

A

Tinea nigra

57
Q

Treatment of tinea nigra

A

Keratolytic (Whitfield ointment, 2% SSA)
Tincture of iodine
Topical antifungal

58
Q

Most common dermatophytosis worldwide

A

Tinea manuum and tinea pedis

59
Q

Fine dry scaling of palm accentuated in the creases

A

Tinea manuum

60
Q

Most common presentation of tinea pedis

A

Interdigital type, between lateral 3rd and 4th, 4th and 5th toes

61
Q

Most common pathogen of moccasin type of tinea pedis

A

T. Rubrum

62
Q

Vesiculobullous type of tinea pedis is caused by

A

T. Interdigitale

63
Q

Responsible for malodor of athlete’s foot

A

Pseudomonas

Proteus

64
Q

Highest rate of positive findings of KOH in tinea pedis

A

Blister roof of vesicles or bulla

65
Q

Treatment for mild interdigital tinea pedis

A

Terbinafine cream applied BID for 1 week

8th (28 decks)

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