Contact Dermatitis Flashcards
1
Q
What is allergic contact dermatitis?
A
An immunologic cell mediated response to an allergen
2
Q
How long does the allergic contact prices take?
A
5-25 days
3
Q
What does allergic contact dermatitis look like?
A
Asymmetrical or unilateral distribution usually poorly demarcated
Erythema, vesicles, severe oedema
4
Q
How would you diagnose allergic contact dermatitis?
A
- Clinical symptoms
- Patch testing
5
Q
What are typical allergens?
A
- Nickel
- Cobalt
- Lanolin
- Plants
- Epoxy resin adhesives
- Topical medication
- Latex
6
Q
What is irritant contact dermatitis?
A
Non immunological response to a skin irritant
Agent penetrates the stratum corneum
7
Q
What is irritant contact dermatitis like?
A
Acute - painful, weepy, vesicular
Chronic - dry, erythema tops cracked lichenified skin
8
Q
What are typical irritants?
A
- Water
- Soaps and detergents
- Reducing and oxidising agents
- Powders dust and soil
- Oils
- Acids and alkalis
- Solvents and abrasives
9
Q
How do you manage contact dermatitis?
A
- Identification of cause
- Prevention - skincare, education and protective measures
- Treatment - emollient and soap subs, topical corticosteroids and treating any secondary infection
