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Flashcards in Eczema Deck (23)
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1

What is seen in eczema?

itchy, ill-defined, erythematous and scaly

2

What is the common histology to dermatitis?

spongiosis

3

What is the reaction taking place with contact allergic dermatits?

delayed type HS

4

Why is there weeping with acute dermatitis?

when there is severe spongiosis, fliud leaks out onto skin surface

5

What cells in the epidermis process the antigens in contact allergic?

langerhan cells

6

How is contact allergic dermatitis diagnosed?

patch testing

7

How long is left before checking for a reaction with contact allergy?

96hours

8

What causes irritant contact?

non-specific physical irritation rather than an allergic reactions

9

What happens at the nail matrix?

nail plate is manufactured at the proximal nail bed

10

What are the chronic changes seen with atopic eczema?

lichenification
excoriation
secondary infection

11

What pathogen causes eczema herpeticum?

herpes simplex virus

12

What does eczema herpeticum look like?

monomorphic punched-out lesions

13

Where is the rash for eczema found in infants?

cheeks and extensor surfaces

14

How is eczema herpeticum treated?

IV fluids and IV acyclovir

15

What is discoid eczema?

well-defined eczema and scale
pts often atopic as well

16

What is the sign of chronic actinic dermatits/photosensitive eczema?

cut-off at collar

17

What is stasis eczema secondary to?

hydrostatitc pressure
oedema
red cell extravasation

18

What other skin problem are pts with oedema at risk at?

cellulitis

19

How do you differentiate between cellulitis and eczema?

If the rash is bilateral it is more likely to be eczema

20

What is seborrheoic dermatitis?

a papulosquamous disorder patterned on the sebum-rich areas (scalp, face, trunk)

21

What is pompholyx eczema?

rapid; spongiotic vesicles with very acute inflammation

22

In addition to spongiosis, what else is found histologically in drug-related dermatitis?

eosinophilic infilatration

23

What is lichen simplex caused by?

physical trauma to the skin-scratching which then causes spongiotic dermatitis