derm Flashcards
what antibiotic do you usually use with skin infections ?
flucloxacillin-good against staff and strep
what age is the shingles vaccine given routinely on the NHS?
70
what is first line treatment for SLE?
hydroxychloroquine
what is the treatment for rosacia?
mild/moderate: topical metronidazole
severe/resistant: oral tetracycline
what are the causes of acanthosis nigricans?
insulin resistance (eg DM, steroids, PCOS)
obesity
malignancy
acromegaly
what can a persistent mouth ulcer suggest?
squamous cell carcinoma (most mouth ulcers heal in 10-14 days)
NICE-unexplained and persistent >3w oral ulcers-urgent referral
what sort of soft tissue infections is chickenpox a risk factor for?
invasive group A strep soft tissue infections, eg nec fasc, cellulitis.
what is lichen planus?
chronic inflammatory condition which affects the skin and /or mucosal surfaces. differential in itchy vulva.
what does lichen planus look like?
erosive,glazed or glossy erythematous plaques; bluish-purple, shiny, flat-topped papules with small white dots or lines (Wickham’s striae); or uniformly white hyperkeratotic plaques.
what might be some secondary care tests for itchy vulva?
vulvoscopy
biopsy
allergy tests
how do you treat an itchy vulva with unknown cause?
emollient
self care
if it affects sleep -mild anxiolytic antihistamine, eg hydroxyzine, or low dose of TCA eg amitriptyline
1-2 week trial of hydrocortione 1%
topical anti-infectives/steroid combos if ?infection
symptoms persist despite this -refer for further investigation