Diffuse Idiopathic Skeletal Hyperostosis (DISH) Study Group The Study Group aims to: organize and present a systematic literature review of the currently existing criteria for diagnosing DISH in daily practice assess the value of clinical symptoms and objective findings (incl. imaging and laboratory markers) and producing a diagnostic algorithm for patients who are clinically suspicious for DISH organize long-term projects with patients diagnosed with DISH in order to document the natural process of the disease, including current treatment practices identify factors that may be able to predict the development of the typical structural bony changes leading to functional disability and pain in patients with metabolic syndrome investigate the pathogenetic pathways that lead to new bone formation investigate if the disease is conditioned by a genetic predisposition. Up to now, the group has set up a research agenda covering all aspects of the Group aims. The projects are ongoing / being planned Publications: Kuperus J et al, Classification criteria for diffuse idiopathic skeletal hyperostosis: a lack of consensus, Rheumatology 2017 Mader R, et al, Difuse idiopathic skeletal hyperostosis (DISH): where we are now and where to go next., RMD Open 2017 The EULAR DISH Study group consists of rheumatologists, radiologists, geneticists, orthopaedic surgeons and patients who have scientific interest in the diagnosis and natural course of DISH The aim is investigate the clinical presentation and necessary diagnostic procedures for ensuring the diagnosis of DISH. So far, such information does not exist because of unclear clinical symptoms of this diagnosis. Furthermore, there is no consensus of which diagnostic criteria are best suitable for DISH for differentiate it from other inflammatory hyperproliferative rheumatic diseases. Task Force / Committee: X. Baraliakos, R. Mader, J.J.Verlaan, I. Eshed, J. Bruges-Armas, P. Sarzi Puttini, F. Atzeni, D. Buskila, I. Novofastovski, K. de Vlaam, J. Kuperus Points of contact: xenofon.baraliakos@elisabethgruppe.de. / rmader@012.net.il