Eczema

Question 1

What is seen in eczema?

Answer 1

itchy, ill-defined, erythematous and scaly

Question 2

What is the common histology to dermatitis?

Answer 2

spongiosis

Question 3

What is the reaction taking place with contact allergic dermatits?

Answer 3

delayed type HS

Question 4

Why is there weeping with acute dermatitis?

Answer 4

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

Question 5

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

Answer 5

langerhan cells

Question 6

How is contact allergic dermatitis diagnosed?

Answer 6

patch testing

Question 7

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

Answer 7

96hours

Question 8

What causes irritant contact?

Answer 8

non-specific physical irritation rather than an allergic reactions

Question 9

What happens at the nail matrix?

Answer 9

nail plate is manufactured at the proximal nail bed

Question 10

What are the chronic changes seen with atopic eczema?

Answer 10

lichenification
excoriation
secondary infection

Question 11

What pathogen causes eczema herpeticum?

Answer 11

herpes simplex virus

Question 12

What does eczema herpeticum look like?

Answer 12

monomorphic punched-out lesions

Question 13

Where is the rash for eczema found in infants?

Answer 13

cheeks and extensor surfaces

Question 14

How is eczema herpeticum treated?

Answer 14

IV fluids and IV acyclovir

Question 15

What is discoid eczema?

Answer 15

well-defined eczema and scale

pts often atopic as well

Question 16

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

Answer 16

cut-off at collar

Question 17

What is stasis eczema secondary to?

Answer 17

hydrostatitc pressure
oedema
red cell extravasation

Question 18

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

Answer 18

cellulitis

Question 19

How do you differentiate between cellulitis and eczema?

Answer 19

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

Question 20

What is seborrheoic dermatitis?

Answer 20

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

Question 21

What is pompholyx eczema?

Answer 21

rapid; spongiotic vesicles with very acute inflammation

Question 22

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

Answer 22

eosinophilic infilatration

Question 23

What is lichen simplex caused by?

Answer 23

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