Derm Flashcards

(45 cards)

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
Scabies organism, features, Rx
Sarcoptes cabiei "human mite" Itchy, widespread papular erythematous rash in hairless areas +/- background of steroid use Rx: permethrin
26
SJS vs Erythema multiforme
SJS involves mucosa at presentation with blistering/bullous lesions
27
Derm referral ABCDE criteria for MM
``` Asymmetry Border - irregular Colour - irregular Diameter >6mm Evolving ``` If 3 present, refer to Derm
28
What is cutaenoua larva migrant and Rx?
Hookworm Caused by direct contact with hookworm ova in cat/dog faeces Features: Threadlike areas of erythema/inflammation Pruritic++ Rx: topical albendazole/mebendazole
29
Itchy inflammatory nodule with black opening on skin + eosinophilia Dx + Rx
Tungiasis - blood stream infection of flea Rx: direct removal of flea or topical bendazole
30
Pubic louse organism
phthirius pubis
31
Glucagonoma associated with which skin lesion
Necrolytic migratory erythema (extremities, abdo, buttocks)
32
Multiple pedunculated hyper pigmented lesions in someone with lung ca
Leser-Trelat sign: SKs in someone with lung ca
33
Fungal nail infections/Onychomycosis - most common cause - DDx - Rx6
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
Seborrheic dermatitis - organism - associations - complications - rx
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
Pityriasis versicolor - organism - associations - features - rx
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
Acne rosacea Rx
Mild: Top Met Severe: Sys Oxytetracycline
37
Erythroderma causes:
``` o Psor o Ecz o Lymphoma/leukaemia o Idiopathic o Drug eruption ```
38
Sebaceous cyst Rx to PREVENT recurrence
surgical excision
39
Drugs causing photosensitivity:
``` o Sulphonylureas o Sulphonamides, tetracyclines, cipro o Amiodarone o Thiazides o Some NSAIDs ```
40
Seborrheic dermatitis in children “cradle cap” ~yellow scale ?Rx:
 Mild/moderate: baby shampoo and oils  Severe: topical steroid NB. Majority spontaneously resolve by 8mo
41
Dermatomyositis can be a malignant manifestation of which cancers
lung, breast, ovarian
42
Features of pyogenic granuloma Associations Rx
``` Fast-growing Spherical Bleeds/ulcerates Dark ~pregnancy, trauma ``` Rx:  Usually spontaneous regression post-partum  Otherwise can curettage, excise, cauterise or cryotherapy
43
BCC Referral ?when/how
o Generally referred routinely for excision | o Unless when delay may cause damage eg. eyelids, nasal ala = urgent referral
44
Bullous Pemphigoid vs Pemphigus
Bullous pemphigOid = nO mucosal involvement PemphigUs = mUcosal involvement
45
Painless white plaque on tongue with fine striae
Lichen plants | Wickham's striae pathognomic