[Fever with skin rash and polyarthralgia in a genetically black-skinned woman].

Adult onset Still's disease (AOSD) is a systemic disorder characterized by intermittent fever, evanescent rash, polyarthralgia or arthritis, and neutrophilic leucocytoclasis. Appearance of skin rash during fever episodes is the characteristic feature. An atypical form of AOSD with a fixed pigmented skin rash was described in 1994. Prognosis of the atypical form is thought to be more severe than that of the classic form. The purpose of this report is to describe the first case of atypical AOSD in a genetically black-skinned woman. Treatment required administration of high-dose systemic corticosteroids.