Dermatology Flashcards
What are the different forms of eczema
Atopic eczema Contact dermatitis Pompholyx HYperkeratotic palmar eczema Seborrhoeic Esteatotic eczema
What is atopic eczema
Atopy- inherited tendency for asthma, hay fever and eczema
Sensitivity to allergens
Dry and inflamed skin aggravated by cold, heat, hard water, infections, clothes
Often develops at 3 months
Signs of atopic eczema
Pruritus
Itchy papules on cheeks
Flexures affected, elbows and knees, skin dry and lichenified
Infection (through scratching) major problem
Management of atopic eczema
Cleansing:
- regular washing using emulsifying ointment
- Bathe in emolient
- Regular emollient cream
Environment:
- Keep house cool
- Limit allergens in house
Scratching:
- cut nails
- Sedative oral antihistamine at night
When are steroids used for eczema and what is used
When emollients are not sufficient
Topical 1% hydrocortisone v effective
Which areas should you avoid using steroids and why
Avoid face - causes telangiectasia (thinning of face which causes blood vessels to be seen)
Anogenital region as scrotal skin absorbs 80x better than other skin
What are associated side effects seen in more potent steroids
- Secondary infection because steroids are immunosuppressive
- Thinning of skin
- Telangiectasia
- Acne
- Mild depigmentation
- Pituitary- adrenal axis suppression
- Cushing’s
When are topical tacrolimus used and what are their modes of action
Is an alternative drug to oral steroids
Interferes with induction of IL-2
What is an infection of eczema associated with
Impetigo- staphylococcal infection
How should you treat non widespread infected eczema
Topical antiseptic- povidone
Topical fusidic acid or mupirocin
How should you treat widespread eczema
Oral flucoxacillin
However if allergic to penicillin, use erythromycin
What is eczema herpeticum
Infection of atopic eczema caused by the herpes virus
What is eczema herpeticum treated with
Emergency i.v. antivirals in hospital
How is contact dermatitis treated
Remove contact
Emollients, barrier creams, topical steroids, oral antihistamines
When is Napkin Dermatitis
Contact dermatitis + infection (its nappy rash)