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all derm Flashcards

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Dermatology Board Prep flashcards
1
Q

treatment staphylococcal scalded skin

A

IV fluclox and topical fusidic acid

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2
Q

management acne vulgaris

A

first line - single topical therapy (retinoids, benzoyl peroxide)
second line - topical combination (retinoids, benzoyl peroxide, topical abx)
oral abx - tetracyclines (must be used in combination for < 3 months)
COCP as alternative to oral abx
severe - oral isotretinoin

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3
Q

what is eczema herpeticum

A

HSV infection of eczema
vesicular rash which ulcerates and crusts
treat with IV acyclovir

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4
Q

management BCC

A

surgical excision with 4mm margin
curettage and cautery
moh’s surgery
topical therapies -imiquimod or 5-fluorouracil

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5
Q

presentation tinea

A

round scaly lesion
itchy
central clearing (ring worm = ring shape)
capitus - scalp
corporis - trunk, legs or arms
pedis - feet

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6
Q

management tinea

A

skin - terbinafine or topical ketoconazole
scalp - griseofulvin or terbinafine
nails - terbinafine

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7
Q

causes erythema multiforme

A

infections - HSV, mycoplasma, CMV, VZV
drugs - sulphonamides, NSAIDs, allopurinol, penicillin, phenytoin

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8
Q

causes erythema nodosum

A

NO cause - idiopathic
Drugs - sulphonamides
OCP - oral contraceptive pill
Sarcoidosis
UC/Crohns
Micro - TB, strep

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9
Q

what causes pityriasis versicolour

A

fungus - Malassezia furfur

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10
Q

presentation pityriasis versicolour

A
  • circular hypo/hyperpigmented patches
  • fine white scale
  • itchy
  • back of neck and trunk
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11
Q

management pityriasis versicolour

A

topical antifungal e.g. ketoconazole shampoo

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12
Q

four types melanoma

A

most to least common
superficial spreading
nodular
lentigo maligna
acral lentiginous

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13
Q

what is guttate psoriasis

A

due to strep infection
tear drop papules on trunk and limbs
in children and adolescents

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14
Q

cause pityriasis rosea

A

HHV 6/7

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15
Q

pathophysiology bullous pemphigoid

A

autoimmune blistering disease due to auto-abs against hemidesmosomes

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16
Q

pathophysiology bullous pemphigus/pemphigus vulgaris

A

autoimmune blistering disease, auto-abs against desmosomes

17
Q

which blistering disease involves mucosa

A

pemphigus vulgaris

18
Q

management venous ulcers

A

compression banding

19
Q

chronic psoriasis management

A

corticosteroid + vit D for up to 8 weeks
if no improvement - vit D analogue only BDS
if no improvement - steroid for 4 weeks again

20
Q

wallace rule of 9s - burns

A

arm and head - 9% each
chest, back, each leg - 18%

21
Q

parkland formula

A

volume of fluid (given in 24 hours) = body % burn x weight x 4
only include partial + full thickness burns
hartmanns
give 50% in first 8 hours

22
Q

what burn percentage indicates fluid resus

A

> 15% in adults
10% in children
only second or third degree burns

23
Q

who should be referred to specialist burns services

A

burns >2% in children, >3% in adults
deep partial or full-thickness

24
Q

management actinic keratoses

A

fluoruracil cream
topical diclofenac
topical imiquimod
cyrotherapy
curettage and cautery

25
Q

management actinic keratoses

A

fluoruracil cream
topical diclofenac
topical imiquimod
cyrotherapy
curettage and cautery

26
Q

features lichen planus

A

purple
pruritic
polyglonal
papulues or plaques
white lacy lines on gums and tongue
flexor aspects of wrist and on ankle

27
Q

exacerbating drugs psoriasis

A

beta blockers
lithium
antimalarials e.g. chloroquine
NSAIDs
ACEi
infliximab

28
Q

management pyoderma gangrenosum

A

oral steroids

29
Q

impetigo management

A

fusidic acid
don’t attend work/school until all lesions have crusted over or 48 hours after starting abx therapy

30
Q

management scabies

A

permethrin

31
Q

management rosacea

A

flushing - topical brimonidine gel
papules/pustules - topical ivermectin + oral doxycycline if severe

32
Q

features SJS

A

systemic features
nikolsky sign
mucosal involvement
blistering

33
Q

finger tip rule steroids

A

1 finger tip unit (FTU) = 0.5 g, sufficient to treat a skin area of 2 hands

34
Q

management Bowen’s

A

5-fluorouracil

35
Q

management shingles

A

oral acyclovir
infectious until the vesicles have crusted over, usually 5-7 days following onset

36
Q

features different thickness burns

A

1st - Red and painful, dry, no blisters
2nd (superfic) - pink and painful, blistered
2nd (deep) - white, reduced sensation
3rd - leathery, no pain

37
Q

immunosuppression risk factor for which skin condition

A

SCC

derm + infectious (2 decks)

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