Adult-onset Still disease (AOSD) is a rare systemic inflammatory syndrome that usually presents with characteristic skin findings.Initially, AOSD has been typically associated with an evanescent skin rash that appears during febrile episodes. Subsequently, reports of a more persistent rash have appeared in the literature, referred to as the atypical rash of AOSD. The atypical nonevanescent rash reported in sporadic cases with active AOSD most commonly manifests itself clinically as pruritic persistent papules or plaques.The atypical rash can be usually divided into dermographism-like, lichenoid, and dermatomyositis-like lesions. 1 This same study showed a similar incidence of typical and atypical rash in their AOSD patients (87% and 78%, respectively), suggesting that the incidence of the atypical rash may be higher than that which has been reflected in the literature to date. 1 Some authors have suggested that AOSD with the atypical rash could be severe, with a poor prognosis. 2 Although the atypical rash commonly responds promptly to systemic corticosteroids, AOSD patients with the atypical rash often require more aggressive therapy.