Seborrhoeic dermatitis Flashcards
1
Q
What is seborrhoeic dermatitis?
A
- Chronic dermatitis thought to be caused by an inflammatory reaction related to a proliferation or a normal skin fungus
2
Q
What is the name of the fungus that is responsible for seborrhoeic dermatitis?
A
Malassezia furfur
3
Q
What are the clinical features of seborrhoeic dermatitis?
A
- Eczematous lesions on the sebum-rich areas: scalp (may cause dandruff), periorbital, auricular, and nasolabial folds
- Otitis externa and blepharitis may develop
4
Q
What conditions are associated with seborrhoeic dermatitis?
A
- HIV
- Parkinson’s disease
5
Q
What is the management of seborrhoeic dermatitis of the scalp?
A
- OTC preparations containing zinc pyrithione and tar
- 2nd line: ketoconazole
- Selenium sulphide and topical corticosteroid may also be useful
6
Q
What is the management of seborrhoeic dermatitis of the face and body?
A
- Topical antifungals: ketoconazole
- Topical steroids
7
Q
Where on the body does seborrhoeic dermatitis typically affect children?
A
- Scalp
- Nappy area
- Face limb flexures
8
Q
What is the management of seborrhoeic dermatitis in children?
A
Mild-to-moderate:
- baby shampoo and baby oils
Severe:
- mild topical steroids, e.g. 1% hydrocortisone
