Background: Fibromyalgia (FM), is a neurosensory disorder, characterised by chronic widespread pain and tenderness, with a prevalence in the general adult population estimated to be approximately 5%. A higher prevalence of FM has been reported in various rheumatic disease groups. In inflammatory rheumatic disease, concomitant FM may influence assessment of inflammatory disease activity. The prevalence of comorbid FM and its impact on disease activity in rheumatoid arthritis (RA), ankylosing spondylitis (AS), psoriatic arthritis (PsA), and other spondyloarthiditis (SpA) has not been systematically studied. Therefore, this systematic review and meta-analysis will describe the prevalence of comorbid fibromyalgia in adults with RA, AS, PsA, or SpA and describe the impact of comorbid fibromyalgia on disease activity scores. Methods: Cochrane library, MEDLINE, Psychinfo, PubMed, Scopus, and Web of Science were searched by using key terms and predefined exclusion criteria. Studies were quality assessed using Newcastle-Ottawa Scores. We followed PRISMA guidelines for systematic review reporting. Where appropriate, proportional and pairwise meta-analysis methods were used to pool results.
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Duffield et al. (2018) studied this question.