Knight and Symmons report a very interesting case of a man with Whipple’s disease and provide us with a timely update on this rare condition.1 They describe how six months after initial presentation the diagnosis of adult onset Still’s disease (AOSD) was made and despite regular review at several centres, this diagnosis was upheld for a further five years. Multiple investigations were performed adding little to the original diagnosis. It is not mentioned whether a serum ferritin was taken. This may have been useful given the initial diagnosis of AOSD as it might have resulted in questioning this diagnosis, permitting an earlier diagnosis of Whipple’s …