<prompt> A characteristic feature of Stills disease -Prominent kidney involvementRashesPositive Rheumatoid factorNeutropenia  <response>: Stills disease is a variant of rheumatoid commonly occurring in adults in 20s and 30s.Patients characteristics clinical features are:High spiking fever often up to 40C.Sore throatEvanescent salmon coloured non pruritic rash, seen on chest abdomenLymphadenopathyPericardial effusionWrist joint involvementChances are that you might confuse it with Feltys syndrome so I am giving the important features of both these conditions together 