Seborrhoeic dermatitis, AKA seborrhoeic eczema, is a skin condition characterised by dandruff and sometimes dry, erythematous flakey skin.
It is associated with a fungus called Malassezia furfur (previously known as Pityrosporum ovale). However, it is not contagious.
Treatment is with ketoconazole 2% shampoo and anti-fungal cream.
Severe forms of seborrhoeic dermatitis are associated with Parkinson's disease and HIV.
Complications include otitis externa and blepharitis.
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