Dermatology Flashcards
what is the difference between SJS and toxic epidermal necrosis?
SJS <10% of skin affected
TEN 10-30% affected
which drugs cause SJS/TEN?
Never Press Skin As It Can Peel
NSAIDS
Phenytoin
Sulphonamides
Allopurinol
IVIG
Carbamazepine
Penicillin
how do you treat SJS/TEN?
IVIG and immunosuppression (ciclosporin) -plasmapheresis
which organism causes adult sebborhoiec dermatitis?
Malassezia furfur
what is the management for sebborhoeic dermatitis?
Scalp
1. Zinc pyrithione (head and shoulders), tar (neutrogena,Tgel)
2. ketoconazole
Face and body
- topical antifungals and steroids - ketoconazole
how do you manage impetigo?
localised non bullous - topical fusidic acid
widespread non bullous - oral fluclox
bullous systemic - oral fluclox
what is the school exclusion for impetigo?
48hrs after starting abx or when crusted over
how to manage acne vulgaris?
Mild
benzoyl peroxide/ topical retinoid (+/- topical abx)
Mod
oral abx 3 m lymecycline
Severe
refer - isotretinoin
what are some side effects of isotretinoin?
MUST BE ON 2 FORMS OF CONTRACEPTION
tetarogenic
hair thinning
dryness
low mood and suicidal ideation
what are some symptoms of acne rosacea?
middle aged, rosy cheeks
flushing
symmetrical rash on nose, cheeks and forehead
telangectasia
rhinophyma - nose thickened with more sebaceous glands
photosensitivity
ocular involvement - blepharitis
how do you treat acne rosacea?
topical metronidazole
severe - oral tetracycline - photosensitivity
how to treat pitaryasis vesicolour?
topical ketoconazole
what is pityriasis rosea?
red raised scaly patches on trunk
post infection
self limiting 6-12 weeks
what can exacerbate psoriasis?
alcohol
drugs - bblockers, nsaids, lithium, antimalaria)
infection - guttate
trauma
how to manage psoriasis?
- 4 week trial steroids (morn) and vit D analogue (nocte)
4 week gap
2.steroids and BD vit D analogue
3. BD steroids or coal tar
phototherapy
how do you manage shingles?
pain relief - para, NSAIDs
antivirals - oral acyclovir
what is acitinic keratosis?
pre malignant leison SSC
crusty lesion of sun exposed areas
use flurouracil cream to treat
how to treat onychomycosis?
dermatophyte - oral terbinafine / itraconazole
candida - topical antifungals amorolifine
