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MSRA > Derm > Flashcards

Derm Flashcards

1
Q

First line Rx for acne vulgaris

A

TOP Benzoyl peroxide BD

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2
Q

Derm signs and ABs and Dx test for Dermatomyositis

A

Purple rash on eyelids (heliotrope rash)
Macular rash on back/shoulders (shawl sign)
Red papule over knuckles (Gottron’s papules)

Anti-Mi2 + Anti-Jo

Dx: Muscle bx

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3
Q

Intensely itchy vesicular rash on elbows, shoulders, ankles, scalp

Dx and Rx

A

Dermatitis herpetiformis ~Coeliac disease

Rx: Dapsone

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4
Q

Tender, reddened well defined area on cheek (+/- legs)

Dx + Rx

A

Erysipelas

Rx: Fluclox

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5
Q

Scaly, red, slow growing plaque, refractory to psoriasis treatment

Dx+Rx

A

SCC

Rx:
cryotherapy
topical 5-fluorouracil cream

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6
Q

First line psoriasis Rx

A

Topical vD analogue + Topical potent steroid eg. betametasone

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7
Q

Facial hirsutism Rx

A

TOP Eflornithine

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8
Q

Itchy, patchy alopecia with defined scale

Dx + Ix + Rx

A

Tinea capitis

Woods lamp: green/blue fluorescence of hairs

Rx: Oral antifungal

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9
Q

First line Rx for eczema

A

TOP emollient + TOP mild steroid eg. hydrocortisone 1%

If signs of infection, TOP roid+ABx preparation

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10
Q

Seborrheic dermatitis features and Rx

A

Red scaly rash affecting forehead and eyebrows, nasolabial folds, cheeks, flexures

~eczematous lesions on sebum-rich areas

Rx:
Neutrogena shampoos
Face+body: mild roid/antifungal combo eg. Daktacort

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11
Q

Oral retinoids SEs

A

Hair loss
Nose bleeds
Sore lips
Dry MM

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12
Q

Healthcare worker with vesicles on nails

A

Herpetic whitlow ie. herpes/viral finger nail infection due to exposure to oral secretions

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13
Q

Derm treatment that can stain skin/clothes

A

Dithranol or tar preparations

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14
Q

How to prevent recurrence of SCC

A

Sunscreen

no affect with BCC

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15
Q

Pink, slightly pigmented scaly plaque <5cm, no other lesions

Dx + initial Ix + Rx

A

Bowen’s disease

Skin Bx

Rx: cryotherapy, excision or curettage

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16
Q

Itchy round scaly lesions on back

Dx, Ix and organism

A

Tinea
Trychophyton/Microsporum/Epidermophyton
Skin scrapings/nail clipping

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17
Q

Organism in pytriasis versicolor

A

Malassezia furfur

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18
Q

Red lump near ear/neck/trunk appearing at 3 weeks of age

Prog?

A

Capillary haemangioma/strawberry naeuvus

Grow until 1yo, regress by 4-5yo

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19
Q

New rash in 3 day old:
erythematous rash with pinpoint papules on face/trunk limbs

Prog?

A

Erythema toxicum aka neonatal urticaria ~2-14/7

Spontaneous improvement

20
Q

Port-wine stain description and Rx

A

Malformed capillaries under skin of face

May remain unchanged ie. can then treat with LASER

21
Q

flat grey, brown, black areas on sun-exposed areas in 80yo

A

age spots/liver spots

22
Q

Paediatric trichotillomania features

A 
Hair pulling causing alopecia
Pulling hair of others/objects
Increased periods of stress/anxiety
Denying hair pulling
GI disturbance
23
Q

Discoid lupus features + Rx

A

20-40yo woman
multiple mildly pruritic scaly red patches
face, neck, back of hands
some around lips and oral
(sun exposed areas)
When heal, leave hypo/hyperpigmented area

Rx:
TOP potent steroid
TOP fluocinonide
If systemic needed: hydroxychloroquine

NB. Differs from discoid eczema as this affects extremities (not face/scalp) and leaves hyper pigmented areas

24
Q

AK Rx

A

If few: cryotherapy with eg. liquid nitrogen
If single but incessant and persistent despite therapy: excise + histology

NB. AK can precede SCC

If multiple: TOP 5-FU cream

25
Q

Scabies organism, features, Rx

A

Sarcoptes cabiei “human mite”

Itchy, widespread papular erythematous rash in hairless areas
+/- background of steroid use

Rx: permethrin

26
Q

SJS vs Erythema multiforme

A

SJS involves mucosa at presentation with blistering/bullous lesions

27
Q

Derm referral ABCDE criteria for MM

A 
Asymmetry
Border - irregular
Colour - irregular
Diameter >6mm
Evolving

If 3 present, refer to Derm

28
Q

What is cutaenoua larva migrant and Rx?

A

Hookworm
Caused by direct contact with hookworm ova in cat/dog faeces

Features:
Threadlike areas of erythema/inflammation
Pruritic++

Rx: topical albendazole/mebendazole

29
Q

Itchy inflammatory nodule with black opening on skin + eosinophilia

Dx + Rx

A

Tungiasis - blood stream infection of flea

Rx: direct removal of flea
or topical bendazole

30
Q

Pubic louse organism

A

phthirius pubis

31
Q

Glucagonoma associated with which skin lesion

A

Necrolytic migratory erythema (extremities, abdo, buttocks)

32
Q

Multiple pedunculated hyper pigmented lesions in someone with lung ca

A

Leser-Trelat sign: SKs in someone with lung ca

33
Q

Fungal nail infections/Onychomycosis

  • most common cause
  • DDx
  • Rx6
A

90% dermatophytes: trychophyton rubrum

DDx:

  • yellow nail S
  • psoriasis
  • repeated trauma
  • lichen planus
Rx:
if dermatophyte: oral terbinafine -> itraconazole
- hands 6 weeks to 3 mo
- feet 3-6mo
if fungal: topical antifungal
- if severe, oral itraconazole
DO NOT TREAT UNTIL CONFIRMED BY MICRO
34
Q

Seborrheic dermatitis

  • organism
  • associations
  • complications
  • rx
A

Mallasezia furfur

Assocs: HIV + PD

Complications: blepharitis, OE

Rx:
Face and body:
•	Topical antifungal
•	Topical steroids
•	(recurrence is common)
Scalp:
•	Head and Shoulders (Shampoo with Neutrogena)
•	Ketonazole
35
Q

Pityriasis versicolor

  • organism
  • associations
  • features
  • rx
A

Mallesezia furfural

Assocns:
cushings
maln
immunosup

Ftrs:
o Hypopigmented patches on trunk (mainly)
o May be more noticeable post sun tan
o +/- scale w/ itch

Rx: top antifungal eg. ketoconazole shampoo

36
Q

Acne rosacea Rx

A

Mild: Top Met
Severe: Sys Oxytetracycline

37
Q

Erythroderma causes:

A 
o	Psor
o	Ecz
o	Lymphoma/leukaemia
o	Idiopathic
o	Drug eruption
38
Q

Sebaceous cyst Rx to PREVENT recurrence

A

surgical excision

39
Q

Drugs causing photosensitivity:

A 
o	Sulphonylureas
o	Sulphonamides, tetracyclines, cipro
o	Amiodarone
o	Thiazides
o	Some NSAIDs
40
Q

Seborrheic dermatitis in children “cradle cap” ~yellow scale

?Rx:

A

 Mild/moderate: baby shampoo and oils
 Severe: topical steroid
NB. Majority spontaneously resolve by 8mo

41
Q

Dermatomyositis can be a malignant manifestation of which cancers

A

lung, breast, ovarian

42
Q

Features of pyogenic granuloma
Associations
Rx

A 
Fast-growing
Spherical
Bleeds/ulcerates
Dark
~pregnancy, trauma

Rx:
 Usually spontaneous regression post-partum
 Otherwise can curettage, excise, cauterise or cryotherapy

43
Q

BCC Referral ?when/how

A

o Generally referred routinely for excision

o Unless when delay may cause damage eg. eyelids, nasal ala = urgent referral

44
Q

Bullous Pemphigoid vs Pemphigus

A

Bullous pemphigOid = nO mucosal involvement

PemphigUs = mUcosal involvement

45
Q

Painless white plaque on tongue with fine striae

A

Lichen plants

Wickham’s striae pathognomic

MSRA (18 decks)

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