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|Pain physiology education improves health status and endogenous pain inhibition in fibromyalgia: a double-blind randomized controlled trial|
|van Oosterwijck J, Meeus M, Paul L, de Schryver M, Pascal A, Lambrecht L, Nijs J|
|The Clinical Journal of Pain 2013 Oct;29(10):873-882|
|8/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: Yes; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*|
OBJECTIVES: There is evidence that education on pain physiology can have positive effects on pain, disability, and catastrophization in patients with chronic musculoskeletal pain disorders. A double-blind randomized controlled trial (RCT) was performed to examine whether intensive pain physiology education is also effective in fibromyalgia (FM) patients, and whether it is able to influence the impaired endogenous pain inhibition of these patients. METHODS: Thirty FM patients were randomly allocated to either the experimental (receiving pain physiology education) or the control group (receiving pacing self-management education). The primary outcome was the efficacy of the pain inhibitory mechanisms, which was evaluated by spatially accumulating thermal nociceptive stimuli. Secondary outcome measures included pressure pain threshold measurements and questionnaires assessing pain cognitions, behavior, and health status. Assessments were performed at baseline, 2 weeks, and 3 months follow-up. Repeated measures ANOVAS were used to reveal possible therapy effects and effect sizes were calculated. RESULTS: After the intervention the experimental group had improved knowledge of pain neurophysiology (p < 0.001). Patients from this group worried less about their pain in the short term (p = 0.004). Long-term improvements in physical functioning (p = 0.046), vitality (p = 0.047), mental health (p < 0.001), and general health perceptions (p < 0.001) were observed. In addition, the intervention group reported lower pain scores and showed improved endogenous pain inhibition (p = 0.041) compared with the control group. DISCUSSION: These results suggest that FM patients are able to understand and remember the complex material about pain physiology. Pain physiology education seems to be a useful component in the treatment of FM patients as it improves health status and endogenous pain inhibition in the long term.