Pain medicine : the official journal of the American Academy of Pain Medicine
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This study aimed to examine the relationship between cognitive factors (cognitive fusion and catastrophizing) and functional limitation experienced by patients with fibromyalgia across different levels of pain severity (i.e., moderation). ⋯ The results suggest that in interventions to improve functioning in people with fibromyalgia, some maladaptive forms of thought management (i.e., cognitive fusion and magnification) preferably should be challenged at milder levels of pain severity. According to our findings, cognitive fusion and magnification might have less room to impact functioning at higher levels of pain severity; therefore, rumination and helplessness, which had comparable associations with functioning irrespective of pain levels, would be preferable targets in psychological interventions in patients with fibromyalgia experiencing more severe pain levels.