dermatitis/eczema Flashcards
what does hyperkeratosis mean
increased thickness of keratin layer
what does parakeratosis mean
persistence of nuclei in the keratin layer
what does acanthosis mean
increased thickness of epidermis
what is spongiosis
oedema between keratinocytes
acute phase of eczema
papulovesicular
erthematous lesions
oedema
ooze or scaling & crusting
what can specific substances causing contact dermatitis be identified by
patch testing
features of atopic eczema
pruritus
ill-defined erythema and scaling
generalised dry skin
flexural distribution
what are some chronic changes of eczema
lichenification
excoriation
secondary infection
what type of infection does crusting indicate
staph aureus
what is the UK diagnostic criteria for atopic eczema
itching plus 3 or more:
- visible flexural rash
- history of flexural rash
- personal history of atopy
- generally dry skin
- onset before age 2 years
treatment of eczema
plenty of emollients avoid irritants topical steroids treat infection phototherapy systemic immunosuppressants
what is stasis eczema secondary to?
hydrostatic pressure
oedema
red cell extravasation
what is phompholyx
a type of eczema that causes tiny blisters to develop across the fingers, palms of the hands and sometimes the soles of the feet