Contact Dermatitis Flashcards
What are the two types of contact dermatitis?
Irritant and Allergic contact dermatitis
Allergic contact dermatitis is more common than irritant contact dermatitis. T or F
F. Allergic contact dermatitis is uncommon
What type of hypersensitivity reaction does allergic contact dermatitis cause?
Type IV hypersensitivity reaction
In what situation can allergic contact dermatitis often be seen?
On the head following hair dyes.
What is irritant contact dermatitis?
A non-allergic reaction due to weak acids or alkalis (e.g. detergents).
Which part of the body is commonly affected by irritant contact dermatitis?
The hands
How does irritant contact dermatitis often present?
Erythema (typical)
Crusting and vesicles (rare)
How does allergic contact dermatitis often present?
As an acute weeping eczema
What area of the head does allergic contact dermatitis mostly affect?
The margins of the hairline rather than the hairy scalp itself.
What is the treatment for allergic contact dermatitis?
Topical potent steroid
How does cement cause both types of contact dermatitis?
Alkaline nature - irritant contact dermatitis
Dichromates - allergic contact dermatitis
