Dermatology Flashcards by Nathan Ashburner

Steven Johnson syndrome drugs

Never press skin as it can peel

NSAIDs
Phenytoin
Sulphonamides
Allopurinol
IVIG
Carbmazepine
Penicillin

Lamotrigine

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Allergy tests and their uses

Skin prick- food allergens
RAST- IgE- food and inhaled- use if skin prick CI- on AH or anaphylaxis or extensive eczema
Skin patch- contact dermatitis

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Tx of Bowen’s disease/actinic keratoses

5-fluorouracil cream

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Tx of SJS

Stop factor
IVIG - 1st, 2nd IS

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Cause of seb dermatitis

Malassezia Furfur
More common in PD

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Tx of seb dermatitis

Scalp- zinc

Face/body- topical ketoconazole

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Golden crusty appearance dx

Impetigo

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Tx of impetigo

Localised non bulls- Hydrogen peroxide

Widespread non- oral fluclox

Bullous systemic- oral fluclox

School exclusion- 48hrs after tx or crusted

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Tx of acne

Mild- topical retinoid

Moderate- Oral lymecycline or COCP + BPO

Derm referal- oral isoretanoin

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SE of isoretanoin

Dryness, teratogenic, photosensitivity, low mood

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acne roseacea sx

Flushing, nose cheeks forehead - realted to alcohol consumption
Persistent pustopapular erythema

Middle Aged

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Tx of acne rosacea

Topical ivermectin/metronidazole - mild/mod
Prominently flushing- bromonidine gel

Severe- oral tetracycline and topical ivermectin- if rhinophyllia or severe papule/pustules

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Pityriasis versicolour organism

Malassezia furfur

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Pityriasis versicolour sx and tx

Hypopigmented patches, after suntan
Happens in warm climates
Itchy

Topical ketoconazole

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Vitiligo mx

AI screen
Sunbloc, topical CS

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Psoriasis tx

4 week-topical CS potent in morn
and Vit D analogue at night

If flexor- such as axilla- mild topical CS only
Face- potent CS

Aim fro 4 weeks between CS tx

2nd- if no improvement in 8 weeks - BD Vit D and CS

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Tx of eczema

Low dose- hydrocortisone
Clobetasone
Betamethasone, fluticortisone
Clobetasol

Infective- oral fluclox
Eczema herp- oral acyclovir

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Tx of scabies

Permethrin
All close contacts
2 doses- 1 week apart

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Tx of head lice

Malathion

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Tx of keloid

Intralesional steroids

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White plaques on vulva

Lichen sclerosis

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Spider nevi vs telangiectasia

Press down on them watch fill
Nevi fill from the centre, telangiectasia fill from edge

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What can actinic keratosis turn into

Squamous cell

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Raised pink papule with central dimple

Molloscum contagiosum

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Irregular lesion on palms or feet

Acral lentiginous melanoma

Hyperpigmentation and hyperkeratosis around axilla

Acanthosis nigricans

Tx of ulcer with hyperpigmentation

Venous- compression bandages

Lesion grown from previous injury- single nodule

Dermatofibroma Reassure

Purple, polygonal, pleuritic papule and plaques with white lace in flexors tx

Lichen planus Topical potent steroids

Complications of seborrhoea dermatitis

Otitis media and blepharitis

Itchy red patches of skin in face

Seb dermatitis

Mottled erythema with net like pattern

Erythema ab igne Where exposed to heat

Pyogenic granuloma features

Past trauma Rapid progressing Bleed or ulcerate Can remove

Dermatophyte nail infection tx

Oral terbinafine

monomorphic, punched-out lesions

Eczema herpecticum

Healthcare workers with no varicella AB

Should be vaccinated

When to refer with acne roseca

If red inflamed eyes and eyelids

Erythematous circular patch with raised edge and central hypo pigmentation tx

Tinea corpis Oral fluconazole

Rule of % surface area of burn

Rule of 9s 9- chest, abdo face, anterior leg, head and neck 4.5- anterior arm

Tx of hyerhidrosis

Aluminium chloride

Which drug can exacerbate psoriatic plaques

BLAN Beta blockers Lithium Alcohol NSAIDs

Scaly tear drop papular rash 2 weeks after URTI

Guttate psoriasis

Pruitic papulovesicular elbow/knee/buttocks rash

Dermatitis herpetiformis

Types of skin lesion

Macule- flat, <1cm Plaque- >1cm palpable, elevated Papule- elevated, solid, <1cm Nodule- elevated, solid, >1cm Vesicle- elevated fluid <1cm Pustule- >1cm

Tx of guttate psoriasis

Reassurance and topical tx if symptomatic lesions

Topical steroids SE

Skin depigmentation

When to give IV fluids in burns

When >15% of second or third in adult

Tx of lichen sclerosis

Topical steroids

If IC or previous transplant and lesion what should you do

Urgent referral to term

Singel plaque with scale, then generalised rash with patches and plaques, follows a viral infection

Pityriasis rosea

Herediatoary haemorrhagic telangiectasia sx

Epistaxis Haemoptysis and dyspnoea Telang- lips

Buegers disease features and angiogram

Corkscrew collaterals Absent pulses

Shingles tx

Antiviral <72 hrs

Organism of erysipelas

Strep pyogenies

Meds causing spider nevi

COCP

Haematemesis after severe burns

Curlings ulcer- due to volume depletion causing ischaemia in gastric mucosa

Pearly, flesh-coloured papule, rolled edges with telangiectasia may ulcerate

BCC

Target lesions

Erythema multiforme

Dermoid vs sebaceous cyst

Demoid- many hairs, skin cells, teeth ect Seb- 1 hair punctin, filled with pus

Oedema after burns reason

Hypoalbuminaemia

If have severe burns what should you consider doing

Early intubation

Cause of pellagra

Isoniazid

Nikolsky sign

Blisters and erosions appear when the skin is rubbed gently

Causes of hirsutism

PCOS- most common Cushing CAH Androgen therapy Obesity

Parkland formula

% bunt x weight x 4= total fluid Half delivered in first 8 hours

Features of Bowen disease

May progress to squamous cell persistent reddish-brown patch or plaque of dry, scaly skin

Tx of erythema nodosum

Nothing

Features of shingles

Burning pain Macular rash Vesicular

Rapid growth, red, dome, central defect containing keratinous material

Keratoacanthoma

Light that causes squamous cell cancer

UVA

Cancer most likely developed with immune suppression

SCC

Types of contact dermatitis

Irritant- usually acids/alkalis Allergic-hair dyes, weeping eczema- type 4

Vasculitic rash

Purpura- flat red blotches looking like bruises and blistering

Pustules and nodules in nack and axilla, swollen, yellow discharge

Hirdradenitis suppurativa

Hari loss, broken exclamation mark hairs

Alopecia areata

Mx of SJS/TEN

ICU

Main use o antiviral in older people

Reduce incidence of post herpetic neuralgia

Pompholyx eczema

High humidity Vesicle eruptions Palms

Lentigo maligns features

Chronic sun exposed areas- face Older people Slow

Atheltes foot tx

Topical anti fungal 4 weeks If not working- oral anti fungal

When is breslow depth a poor prognosis

>4mm- 5year survival 50%

Most aggressive melanoma

Nodular

Tingling when eating apples, kiwis ect

Oral allergy syndrome

Vitiligo vs versicoloured

Vitiligo affects peripheries and is more confluent

Pityriasis rosea tx

Self limiting

Tx of tinea

Topical antifungal Oral antifungal when severe or if capitus

Aktinic keratoses and Immunosuppressed

2ww Derm referral

Bullous pemphigoid vs pemphigus vulgaris

Mucosal- vulgaris Non- pemphigoid

When should superficial burns be referred to secondary care

>3% body surface area

Malignancy causing acanthuses nigricans

gastric adenocarcinoma

Causes of erythema multiforme

Same as SJS but no pheytoin Plus COCP

What is erythroderma

>95% skin is involved in a rash

Solitary firm nodule that dimples on pinching

Dermatofibroma

Urticaria management

Non sedating AH Oral pred- severe or resistant

What tool most accurately measures burn area

Lund and Browder chart

Drugs causing erythema nodosum

Penicillins Sulphalazine COCP

Tx of keratoancanthoma

Usually regress in 3 months with scar But can excise out of caution as looks like SCC

Pityriasis versicoloured tx

Topical ketoconazole

Impetigo but HPO didn't help last time

Give fusidic acid topically

Nail changes with psoriasis

POSH Pitting Onchylysis Subunal hyperkeratosis

Smooth, rubbery, mobile mass

Lipoma

When to US a lipoma

When >5cm

Tx of telang in acne roses

Laser

Dermatology Flashcards

(103 cards)