This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bones, Subject name: Pathology
Characteristic feature of still's disease: 
Select and explain. 
A. Prominent kidney involvement, B. Rashes, C. Positive Rheumatoid factor, D. Neutropenia
B: Rashes
Answer: B: Rashes 
Explanation: Ans. is 'b' Rashes Stills disease is a variant of rheumatoid commonly occurring in adults in 20's and 30's patients characteristics clinical features are:High spiking fever often upto 40deg C.Sore throatEvanescent salmon coloured non pruritic rash, seen on chest & abdomenLymphadenopathyPericardial effusionWrist joint involvementChances are that you might confuse it with Felty's syndrome so I am giving the important features of both these conditions togetherStills ds Feltv's syndromeRheumatoid arthritis * Rheumatoid arthritisSplenomegaly * SplenomegalyLeucocytosis * NeutropeniaRash * High titres of rheumatoid factorRheumatoid factor is usually not present