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Q5 Dermatology > Fungal Infections > Flashcards

Fungal Infections Flashcards

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Dermatology Board Prep flashcards
1
Q

Cutaneous fungal infections located where?

A

Epidermis

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2
Q

Groups of fungal infections? (3)

A

1) Dermatophytes
2) Malassezia spp
3) Candida spp

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3
Q

Dermatophytes infect what type of tissue?

A

Keratinized (stratum cornuem, hair, nails)

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4
Q

Tinea Pedis is?

Caused by?

Patterns? (3)

A

Athlete’s foot

Trich rubrum

Interdigital
Moccasin
Vesiculobulbous

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5
Q

Interdigital Tinea Pedis presentation?

A 
Erythema and scaling
P maceration (soggy)
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6
Q

Moccasin Tinea Pedis presentation? (4)

A

Hyperkeratotic scaling
P vesicles and erythema at margin
P a/w onychomycosis
P “one hand, two feet”

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7
Q

Vesiculobulbous Tinea Pedis presentation?

A

Grouped 2-3 mm vesicles/bullae on arch or instep

P painful or itchy

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8
Q

KOH findings for Tinea Pedis?

A 
Parallel walls (stay same distance apart, don't taper or widen)
Septated, branching hyphae
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9
Q

Tinea Pedis tx?

Interdigital?

Moccasin?

Vesic?

A

Hygiene (dry and clean) + topical antifung

any topical antifungs

-afines or -azoles + keratolytics (salicylic acid)

compresses + topicals + P oral

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10
Q
  • azoles are cidal or static?
  • afines are cidal or static?

Ciclopirox is cidal or static?

A

Static

Cidal

Both

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11
Q

Tinea Pedis may lead to? (3)

A

Low leg cellulitis
Tinea corporis
Onychomycosis

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12
Q

Onychomycosis is?

Tx?

A

Fungus of nail bed

Must confirm w/ KOH
Oral -afine or -azole

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13
Q

Tinea Corporis is?

Presentation?

A

Ringworm
U trunk/limbs

Itchy, annular lesion w/
central clearing, raised scaling border

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14
Q

Tinea Corporis tx?

A

KOH and culture
Topicals
Orals if animal source, large area or unresponsive to topical

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15
Q

Tinea Versicolor is?

Presentation?

A

Infection from Malassezia spp (lipophilic yeast)

U in summer on trunk
Well-demarcated tan, salmon or hypopig patches
Scales seen w/ rubbing

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16
Q

Tinea Versicolor tx?

A

KOH w/ short hyphae and round spores
Antifung shampoo (10 mins)
P -azole cream
Oral -azole if large area

17
Q

Oral Ketoconazole delivered how?

A

Thru sweat:

Take pill, exercise, don’t shower for 6 hrs

18
Q

Candidal Intertrigo is?

Presentation?

A

Candida in skin folds

Sharply demarcated red plaques in skin folds,
Satellite papules
Burns/itches

19
Q

Candidal Intertrigo tx?

A 
KOH w/ pseudohyphae
Nystatin ointment
P -azoles
NOT -afines
Low steroid for burn x 1 wk only

Q5 Dermatology (14 decks)

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