This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
A 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: 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 up to 40°C.
Sore throat
Evanescent salmon coloured non pruritic rash, seen on chest & abdomen
Lymphadenopathy
Pericardial effusion
Wrist joint involvement


Chances are that you might confuse it with Felty's syndrome so I am giving the important features of both these conditions together