eczema Flashcards
describe acute eczema
redness with ill-defined papules and vesicles which may be exudative or crusting
aetiology of atopic eczema
- family history of atopy
- primary genetic defect in skin barrier function (protein filaggrin)
where does atopic eczema typically present?
more common on the face and extensor aspects of limbs in infants
- flexor aspects in children and adults
what are exacerbating factors for eczema
infections
allergens (chemicals, food, dust, pets)
heat
sweating
Management of atopic dermatitis
general measures- avoid known exacerbating factors
topical steroids for flare-ups
antihistamines for sx relief, antibiotics
complications of atopic eczema
- secondary bacterial infection- staph. aureus
2. secondary viral infection- eczema herpeticum
management of irritant contact dermatitis
recognise responsible substance and reduce exposure
emollients and topical steroids assist healing
what type of hypersensitvity reaction is allergic contact dermatitis
Type 4 delayed hypersensitivity reaction (48-72hrs post exposure)
describe discoid eczema
rounded 1-3cm well circumscribed very itchy patches of eczema, usually more prevalent on limbs than trunk
complications of discoid eczema
can resul in post inflammatory hyperpigmentation or hypopigmentation
Management of discoid eczema
- protect skin from injury
- apply emollients and soap subsitutes
- topical steroids, antibiotics
- UV treatment?
what is venous eczema
common form of dermatitis that affects one or both legs in association with venous insufficiency
features of venous eczema
itchy red blistered crusted plaques
orange-brown macular pigmentation
champagne bottle lower leg
treatment of venous eczema
- reduce swelling in legs- stockings
- treat with topical steroids +/- abx
- treat varicose veins
what is seborrhoeic dermatitis and where does it present
common relapsing form of eczema that affects the sebaceous rich glands of scalp, face (ears and eyebrows) and trunk
