Dermatology Flashcards
erythrasma causes, ix, mx
corynebacterium minitissimi
Ix: wood slit lamp = coral red fluorescence
Tx: topical miconazole
cause of erysipelas
strep pyogenes
causes of Koebner’s phenomena
Vitligo
Psoriasis
Lichen Planus
cause of SJS/TEN
secondary to drug reaction
NSAIDs, Phenytoin, Penicillin
Erythroderma causes
eczema
psoriasis
drugs
lymphoma
Sebhorrhoeic Dermatitis links
linked to otitis externa
blepharitis
cause of Pityriasis Rosea
HHV-7
pathogenesis of Pityriasis Rosea
recent viral infection
herald patch
erythematous oval scaly patches
self limiting
treatment of chronic plaque psoriasis
steroid
Vit D analogue
coal tar phototherapy
systemic immune modulation
Eczema treatments
emollients
corticosteroids
topical calcineruin inhibitors
banadages
treatment of headlice
malathion
lichen planus surfaces and causes
gold
quinine
thiazides
cellulitis Eron classification
- no signs of systemic toxicity, no uncontrolled co-morbidity
- systemically unwell or systemically well WITH co-morbidity
- significant systemic upset OR unstable co-morbidity
- sepsis, necrotising fascitits
cause of Erysipelas
strep pyogenes
S/S of erysipelas
well demarcated superficial skin lesion
Erythrasma cause
corynebacterium minutissimum
S/S erythrasma
flat, scaly pink/brown/rash in axilla
necro lipodica diabeticorum
S/S: shiny, painless areas of yellow/red skin
on shins of diabetics
Abs in bullous pephigoid
Abs against BM
Abs in pemphigus vulgaris
Abs against desmosomes
Erythema multiforme
hypersensitivity reaction
1. Infection (HSV, mycoplasma)
2. Drugs (Barbs, NSAIDs)
Dermatofibroma
appears following trauma
Seborrhoeic Keratoses
greasy, stuck on, cauliflower like growth
Bowen’s disease
SCC in situ
Red/brown scaly plaques
tx of Bowen’s disease
5-FU
Cryo/cautery
appearance and cause of erysipelas
sharply defined superficial infection by S. pyogenes
