• J W Jacobs, J J Rasker, A van der Heide, J W Boersma, A C de Blécourt, E N Griep, M H van Rijswijk, and J W Bijlsma.
• Arthritis Care Res. 1996 Apr 1;9(2):105-11.

ObjectivesTo study the validity and nature of self-assessed symptoms among patients with fibromyalgia syndrome (FMS) and to compare our data with findings reported in the US. To determine whether tender point scores correlate with self-reported pain and other symptoms and to study the influence of disease duration.MethodsTender point scores were assessed in 113 consecutive patients with FMS. All patients completed 2 self-assessment questionnaires (an extended Campbell list, the Enschede Fibromyalgia Questionnaire, and the Dutch Arthritis Impact Measurement Scales).ResultsThe self-assessed symptoms of the Dutch FMS patients seem to be valid and are comparable with those of American patients. No association between disease duration and number of self-reported symptoms was found. An association between self-reported pain and mean tender point score was lacking for patients with disease of shorter duration and was weak for patients with disease of longer duration.ConclusionsThe use of a self-report questionnaire for patients with FMS is feasible and appears to be valid. Tender point scores and self-reported pain represent very different aspects of pain in FMS.

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