Eczema

Question 1

Definition of eczema?

Answer 1

Non-autoimmune inflammatory skin condition

a.k.a. dermatitis

Question 2

Risk factors for eczema?

Answer 2

• PMHx/Fx of atopy (food allergies, hay fever, asthma)

- Immunocompromise

Question 3

Eczema lesion characteristics?

Answer 3

Dry skin
Itchy
Erythematous
Distribution (flexures)
Lichenification (if chronic)

Question 4

Subtypes of eczema/dermatitis?

Answer 4

Atopic
Contact
Discoid
Seborrhoeic
Dyshidrotic 
Herpeticum

Question 5

Which type of eczema is a medical emergency?

Answer 5

Eczema herpeticum

Question 6

What type of hypersensitivity is atopic eczema/dermatitis and where are lesions typically located?

Answer 6

Type 1 hypersensitivity (IgE-mediated)

Flexures

Question 7

What type of hypersensitivity is contact eczema/dermatitis, what substances often cause it, and what are the 2 types?

Answer 7

Type 4 hypersensitivity (delayed)

Often nickel/latex

Irritant
Allergic

Question 8

Features of discoid eczema/dermatitis?

Answer 8

Affects middle-aged/elderly

Coin-shaped plaques

Question 9

Features and distribution of seborrheic eczema/dermatitis?

Answer 9

Yellow, greasy, scaly rash

Eyebrows, nasolabial, scalp (cradle cap)

Question 10

Features and distribution of dyshidrotic (pompholyx) eczema/dermatitis?

Answer 10

Itchy/painful blisters

Palms + plantars

Question 11

Features of eczema herpeticum?

Answer 11

Medical emergency (can disseminate)

Superimposed HSV-1

Question 12

Lesion distribution characteristic of eczema?

Answer 12

Flexures