Dermatology Flashcards
Name examples of viral exanthemas?
Measles
Scarlet fever
Rubella
Dukes’ disease - no identifiable organism.. not real disease
Parvovirus B19
Roseola infantum
Risk factors for nappy rash:
Delayed changing of nappies
Irritant soap products and vigorous cleaning
Certain types of nappies (poorly absorbent ones)
Diarrhoea
Oral antibiotics which can predispose to candida infections.
Pre-term infant
What factors suggest thrush infection over nappy rash?
Rash extending into skin folds,
Large red macules,
Well demarcated scaly border,
Circular pattern to the rash spreading outwards, similar to ringworm.
Satellite lesions
General management points of nappy raash?
Disposable nappies preferred,
Expose area to air when possible,
Apply barrier cream,
Mild steroid cream in severe cases,
If candidal nappy rash - topical imidazole and cease use of barrier cream until candida has settled
Management of scabies?
Permethrin cream - applied over whole body when skin is cool and left of for 8-12 hours then washed off. Repeated week later to kill any that were eggs at time of first treatment.
If difficult to treat/crusted scabies then single dose of oral ivermectin can be used. Again, repeated one week later.
All household members should also be treated.
Presentation and management of head lice?
Pediculus humanus capitis.
Presentation - itchy scalp.
Management - Dimeticone 4% lotion applied to hear and left overnight then washed off. Repeated 1 week later.
Bollous vs non bollous impetigo and the treatment
Bollous - large, fragile fluid filled blisters. Start with 1% hydrogen peroxide cream. If severe/extensive then oral fluxloc/erythromycin.
Non-bollous - thin walled vesicles or pustules which rupture and cause golden-brown crusts. Oral flucloxacillin.
Features of molluscum contagiosum
Poxvirus
Small flesh coloured papule with central dimple.
Usually resolve without treatment but can take up to 18 months. No exclusion needed but to limit spread dint share towels/bedsheets.
If immunocompromised/extensive lesions then topical imiquimod/benzyl peroxide. Cryotherapy
