Wednesday, July 20, 2011
Ellen M Goudsmit, Psychologist: the Canadian Myalgic Encephalomyelitis criteria were revised in 2010 to address some of the flaws
BMJ rapid response:
Re:Re:Will adopting the Canadian criteria improve the diagnosis of chronic fatigue syndrome?
Ellen M Goudsmit, Health Psychologist
As all ME and CFS specialists are aware, the Canadian criteria published in 2003 were revised in 2010 to address some of the flaws described in the BMJ and elsewhere.
They include a number of improvements. For example, they were designed for use in both clinical practice and research. (The CDC case definition was formulated for research alone).
Secondly, they are limited to six criteria with a comparatively concise list of examples to improve diagnostic precision.
Thirdly, the physician does not have to plough through a whole issue of a journal but can get the essential details on one page of A4. It's focused, evidence-based and infititely more accurate than what went before.
If the scientific process is to take its course, practitioners and researchers need to be aware of important developments and adapt their practice where it is in the patients' interest to do so. The new criteria may not be perfect, but CFS is a complex disorder and if IBS has Rome III, why can we not give some serious consideration to Canada II?
Jason LA, Evans M, Porter N et al. The development of a revised Canadian Myalgic Encephalomyelitis Chronic Fatigue Syndrome case definition. American Journal of Biochemistry and Biotechnology 2010; 6 (2): 120-135.
Dr Ellen Goudsmit C.Psychol FBPsS
Competing interests: None declared
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Published 20 July 2011
2010 Revised Canadian Myalgic Encephalomyelitis Chronic Fatigue Syndrome criteria.pdf