• W Eich, W Häuser, E Friedel, A Klement, M Herrmann, F Petzke, M Offenbächer, M Schiltenwolf, C Sommer, T Tölle, and P Henningsen.
• Abteilung Innere Medizin II, Universitatsklinikum Heidelberg, Heidelberg. wolfgang.eich@med.uni-heidelberg.de
• Z Rheumatol. 2008 Dec 1;67(8):665-6, 668-72, 674-6.

BackgroundInterdisciplinary guidelines for the definition, classification and diagnosis of chronic widespread pain (CWP) and fibromyalgia syndrome (FMS) were developed by collaboration of 10 German medical and psychological associations and 2 patient self-help organizations.MethodsA systematic literature search was performed in the Cochrane Library (1993-12/2006). Medline (1980-2006), and Scopus (1980-12/2006). Levels of evidence were assigned according to the classification system of the Oxford Center for Evidence-Based Medicine. Grading of the strength of recommendation was done according to the German program for disease management guidelines. Standardized procedures to reach a consensus on recommendations were used.ResultsCWP is defined by the criteria of the American College of Rheumatology (ACR-strong consensus). FMS can be diagnosed for clinical purposes by symptom-based criteria (without tender point examination) as well as by the ACR criteria (strong consensus).

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