Any physician travelling to other centres throughout the world must be struck by the similarity of the problems in diagnosis and management faced by fellow colleagues in rheumatology. Despite the international spread of journals and of standard textbooks, the same practical questions constantly appear - how do you manage the psychotic patient with cerebral lupus, or the patient with intractable polymyositis, or the rheumatoid patient who has failed on almost all known therapeutic agents. Is it worth differentiating various 'overlap' syndromes? How can one improve on the classification and...