Background: Fibromyalgia (FM) is one of the most common chronic pain disorders deteriorating the quality of life of the patients all over the world. The objective of the present study was to estimate the prevalence of fibromyalgia in chronic pain patients attending in a pain clinic of a university teaching hospital Bangladesh.Methods: This cross sectional study was conducted among 262 consecutive patients visiting the pain clinic of Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from January 2019 to June 2019. FM was diagnosed according to the American College of Rheumatology in 2016. Chi-square test, Fisher’s exact test, independent t-test was used for comparison, as needed. A p-value of <0.05 was considered statistically significant.Results: The overall prevalence of FM was 12.6%. The prevalence was higher among female (20.5%) compared to male (2.6%) (p < 0.001). The duration and intensity of pain were significantly higher among patients with fibromyalgia (duration 5.9 years vs 5.1 years, p = 0.004; VAS score 6.12 ± 1.09 vs 5.40 ± 0.96, p = 0.002). The WPI and SS scale score difference between patients with or without fibromyalgia was also significant (p < 0.001). The mean (SD) number of tender points was 15.4 (1.4).Conclusion: The prevalence of FM among patients attending pain clinic of BSMMU was high. Besides, pain duration and intensity was also high among these patients which potentially has negative impact on their quality of life.
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