Impact of fibromyalgia and related factors on foot function and quality of life: Cross-sectional study

Abstract

Background The aim of study is to examine the factors that may influence pain, disability and the limitation of activity due to the presence of fibromyalgia in the foot. Methods 323 patients diagnosed with fibromyalgia were recruited. Each participant completed the Foot Function Index questionnaire (FFI) and the Revised Fibromyalgia Impact Questionnaire (FIQR). A multivariate analysis was performed to determine the factors associated with high scores in each of these questionnaires. Results In both questionnaires, the subscales presenting the highest scores were foot pain (FFI score: 71.18 ± 20.40) and symptom intensity (FIQR score: 36.23 ± 8.04). According to the multivariate analysis, foot function is influenced by age (p = <0.001), BMI (p = 0.001), lack of physical activity (p = <0.001), the presence of rheumatoid arthritis (p = 0.012), retirement due to disability (p = <0.001) and being unemployed (p < 0.001). Conclusion Fibromyalgia affects foot function, provoking significant pain. Related factors include age, BMI, lack of physical activity, the presence of rheumatoid arthritis, and employment status.