Documento de consenso de la Sociedad Española de Reumatología sobre la fibromialgia

Patient-journey of fibromyalgia patients: A scoping review

BACKGROUND

Fibromyalgia (FM) is a chronic disease characterized by widespread pain. Although much is known about this disease, research has focused on diagnosis and treatment, leaving aside factors related to patient's experience and the relationship with healthcare system.

OBJECTIVES

The aim was to analyze the available evidence on the experience of FM patients from the first symptoms to diagnosis, treatment, and follow-up.

METHODS

A scoping review was carried out. Medline and the Cochrane Library were searched for original studies or reviews dealing with FM and focusing on "patient journey". Results were organized using a deductive classification of themes.

RESULTS

Fifty-four articles were included in the qualitative synthesis. Five themes were identified: the patient journey, the challenge for the health systems, a complex doctor-patient relationship, the importance of the diagnosis, and the difficulty of standardizing the treatment.

CONCLUSIONS

This scoping review confirms the negative impact of FM on the patient, their social environment, and health systems. It is necessary to minimize the difficulties encountered throughout the diagnosis and follow-up of patients with FM.

The patient journey of fibromyalgia in Latin America

OBJECTIVES

To explore the patient journey of people with fibromyalgia (FM) in Latin American countries in order to identify problems in health care and other areas that may be resolvable.

METHODS

Qualitative study with phenomenological and content analysis approach through focus groups and patient journey (Ux; User Experience) methodology. Nine virtual focus groups were conducted with FM patients and healthcare professionals in Argentina, Mexico and Colombia recruited from key informants and social networks.

RESULTS

Forty-three people participated (33 were clinicians and 10 were patients). The agents interacting with the patient in their disease journey are found in three spheres: healthcare (multiple medical specialists and other professionals), support and work life (including patient associations) and socioeconomic context. The line of the journey presents two large sections, two loops and a thin dashed line. The two major sections represent the time from first symptoms to medical visit (characterized by self-medication and denial) and the time from diagnosis to follow-up (characterized by high expectations and multiple contacts to make life changes that are not realized). The two loop phases include (1) succession of misdiagnoses and mistreatments and referrals to specialists and (2) new symptoms every so often, visits to specialists, diagnostic doubts, and impatience. Very few patients manage to reach the final phase of autonomy.

CONCLUSION

The journey of a person with FM in Latin America is full of obstacles and loops. The desired goal is for all the agents involved to understand that self- management by the patient with FM is an essential part of success, and this can only be achieved with early access to resources and guidance from professionals.

Risk factors for opioid addiction in chronic non-cancer pain

Opioids are very effective pain medications, but they are not without complications. Its use in chronic cancer pain is clearly established, but not in chronic non-cancer pain. Opioid use has increased in recent years, but at the same time, it has been accompanied by an increase in side effects and related complications, including abuse, abuse and opioid addiction. If we look in the literature on the subject there is a global concern to make an adequate therapy with risk reduction, but the samples studied make it difficult to extrapolate results to the general population and even more so if we take into account factors such as psychiatric comorbidity. This leads us to consider the need to study our own population, its characteristics and see how it is being treated, to refine as much as possible on an appropriate prescription. The authors have carried out a cross-sectional study on patients with non-cancer chronic pain referred to psychiatry and the presence of opioid use disorder. We found risk factors related to the biopsychosocial characteristics of the patients and the characteristics of pain and its treatment. Knowing the risk factors, we can avoid yatrogeny, implement primary and secondary prevention and, ultimately, improve the quality of patient care.

Benefits of the Light Consumption of Red Wine in Pain, Tender Points, and Anxiety in Women with Fibromyalgia: A Pilot Study

BACKGROUND

Fibromyalgia (FM) is characterized by chronic widespread pain, as well as anxiety, sadness, and depression. These symptoms are present in most patients and have a negative impact on their daily, family, and social life. The role of neurotransmitters in the pathophysiology of FM has been extensively discussed. The scientific evidence shows that levels of serotonin are decreased in patients with FM. Numerous studies support the beneficial effects that moderate wine consumption has on the body, with cardiovascular, endocrine, bone, and muscle improvements.

OBJECTIVE

The objective of this pilot study was to assess whether light consumption of red wine improves the main symptoms of FM.

METHODS

The study consisted of an experimental study with a control group with a total of 60 women diagnosed with FM following the American College of Rheumatology's criteria. The experimental group ingested 15 g of alcohol per day, in the form of red wine, over a period of four weeks. The outcome measures were: the level of pain in tender points, sadness, anxiety, depression, and quality of life. The assessments tools were: tender point graphics, the visual analogue scale (for the assessment of pain and sadness), the Hamilton Anxiety Scale, the Hamilton Depression Rating Scale, and the Fibromyalgia Impact Questionnaire. The measurements were completed before and after the consumption of red wine. In addition, the differences between groups were evaluated in terms of drug consumption in the pre-intervention and follow-up phases.

RESULTS

Statistically significant improvements were obtained in the wine ingestion group for the variables of pain (p = 0.038), tender points (p < 0.001), and anxiety (p = 0.028). An improvement in the mean values was observed in favor of the experimental group for the variables of sadness, depression, and quality of life. The differences observed in the changes seen in the groups that were in favor of the wine ingestion group should not be attributed to the consumption of drugs but to the fact that the experimental group had a light intake of red wine.

CONCLUSIONS

The results of this pilot study suggest a potential relationship between alcohol intake through the light consumption of red wine as part of the patients' diet and the improvement of the main symptoms of fibromyalgia. Future studies are necessary to confirm these preliminary data; a bigger sample and a controlled diet should be considered, and the mechanisms through which improvements are achieved should be analyzed.

Synbiotic Supplementation Improves Quality of Life and Inmunoneuroendocrine Response in Patients with Fibromyalgia: Influence of Codiagnosis with Chronic Fatigue Syndrome

Fibromyalgia (FM) and chronic fatigue syndrome (CFS) are two medical conditions in which pain, fatigue, immune/inflammatory dysregulation, as well as various mental health disorders predominate in the diagnosis, without evidence of a clear consensus on the treatment of FM and CFS. The main aim of this research was to analyse the possible effects of a synbiotic (Synbiotic, Gasteel Plus® (Heel España S.A.U.), through the study of pro-inflammatory/anti-inflammatory cytokines (IL-8/IL-10) and neuroendocrine biomarkers (cortisol and DHEA), in order to evaluate the interaction between inflammatory and stress responses mediated by the cytokine-HPA (hypothalamic-pituitary-adrenal) axis, as well as mental and physical health using body composition analysis, accelerometry and previously validated questionnaires. The participants were women diagnosed with FM with or without a diagnostic of CFS. Each participant was evaluated at baseline and after the intervention, which lasted one month. Synbiotic intervention decreased levels of perceived stress, anxiety and depression, as well as improved quality of life during daily activities. In addition, the synbiotic generated an activation of HPA axis (physiological cortisol release) that can compensate the increased inflammatory status (elevated IL-8) observed at baseline in FM patients. There were no detrimental changes in body composition or sleep parameters, as well as in the most of the activity/sedentarism-related parameters studied by accelerometry. It is concluded that synbiotic nutritional supplements can improve the dysregulated immunoneuroendocrine interaction involving inflammatory and stress responses in women diagnosed with FM, particularly in those without a previous CFS diagnostic; as well as their perceived of levels stress, anxiety, depression and quality of life.

Sedentary Behavior and Pain after Physical Activity in Women with Fibromyalgia-The Influence of Pain-Avoidance Goals and Catastrophizing

BACKGROUND

Fibromyalgia is characterized by chronic pain and fatigue that triggers a functional disability caused by the lack of activity. Pain catastrophizing may contribute to avoiding activity with the intention of managing pain levels. Based on the sedentary behavior with fibromyalgia, the present study assessed the preference of pain-avoidance goals and pain catastrophizing as mediator and moderator variables, respectively, that influence pain perception after a 6-min-walking test.

METHODS

The sample was composed of 76 women with fibromyalgia (mean age = 55.05, SD = 7.70). Previous sedentary behavior, preference for pain-avoidance goals, and pain catastrophizing were evaluated before starting the walking-test. Subsequently, pain perception was evaluated.

RESULTS

A significant moderated-mediation model was found in which pain-avoidance goals mediated the relationship between sedentarism and pain after a walking-test, and pain catastrophizing moderated the relationship between the preference for pain-avoidance goals and pain perception. Specifically, high levels of pain catastrophizing contributed to increased pain perceptions after completing the test (B = 0.570, p = 0.03, CI 95% (0.09, 0.11)].

CONCLUSIONS

The results suggest that motivational interventions can improve the symptoms because their objectives are focused on managing conflict goals. These interventions should focus on catastrophic cognitions considering that pain catastrophizing is deemed to be one of the major inhibitors of physical activity in fibromyalgia.

Symptoms in women with fibromyalgia after performing physical activity: the role of pain catastrophizing and disease impact

INTRODUCTION

Walking is an effective treatment for symptoms' management in patients with fibromyalgia. However, despite its benefits, fibromyalgia patients face a variety of obstacles that result in reduced ability to sustain physical exercise. The main goal of the study was to analyze the role of pain catastrophizing and fibromyalgia impact in the relationship between regular walking behavior and pain and fatigue experienced after a laboratory walking test.

METHOD

The study has an observational analytical laboratory design. A total of 100 women were contacted by the research team. Seventy-six women diagnosed with fibromyalgia aged 18 years and older (mean age = 55.05, SD = 7.69) participated.

RESULTS

Significant correlations were found among regular walking behavior, pain catastrophizing, impact of fibromyalgia, pain intensity after walking, and fatigue intensity after walking. The serial multiple mediation analyses confirmed that pain catastrophizing and impact of fibromyalgia mediated the relationship between regular walking behavior and the level of pain (beta B = 0.044, 95% CI = [0.01-0.012]) and fatigue (beta B = 0.028, 95% CI = [0.01-0.08]) after the laboratory walking test. Also, the participants that walked less regularly experienced more pain and fatigue after the 6-Minute Walk Test.

CONCLUSIONS

Considering cognitive variables alongside the impact of fibromyalgia will help understand the inhibitors of engaging in physical activity. Therapeutic walking programs must be tailored to patients with fibromyalgia to reduce pain and fatigue related to physical activity and to promote better functioning and quality of life. Key Points • Regular walking behavior was associated with fibromyalgia impact, pain catastrophizing, and less pain and fatigue after physical activity. • When patients catastrophize pain, they usually interpret physical activity as threatening, which generates more pain and fatigue after doing exercise. • Therapeutic programs should be designed to reduce pain catastrophizing and fibromyalgia impact.

The Conners Continuous Performance Test CPT3™: Is it a reliable marker to predict neurocognitive dysfunction in Myalgic encephalomyelitis/chronic fatigue syndrome?

Introduction

The main objective is to delimit the cognitive dysfunction associated with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) in adult patients by applying the Continuous Performance Test (CPT3^™). Additionally, provide empirical evidence on the usefulness of this computerized neuropsychological test to assess ME/CFS.

Method

The final sample (n = 225; 158 Patients/67 Healthy controls) were recruited in a Central Sensitization Syndromes (CSS) specialized unit in a tertiary hospital. All participants were administered this neuropsychological test.

Results

There were significant differences between ME/CFS and healthy controls in all the main measures of CPT3^™. Mainly, patients had a worse indicator of inattentiveness, sustained attention, vigilance, impulsivity, slow reaction time, and more atypical T-scores, which is associated with a likelihood of having a disorder characterized by attention deficits, such as Attention Deficit Hyperactivity Disorder (ADHD). In addition, relevant correlations were obtained between the CPT3^™ variables in the patient's group. The most discriminative indicators of ME/CFS patients were Variability and Hit Reaction Time, both measures of response speed.

Conclusion

The CPT3^™ is a helpful tool to discriminate neurocognitive impairments from attention and response speed in ME/CFS patients, and it could be used as a marker of ME/CFS severity for diagnosing or monitoring this disease.

Effectiveness, cost-utility and physiological underpinnings of the FIBROWALK multicomponent therapy in online and outdoor format in individuals with fibromyalgia: Study protocol of a randomized, controlled trial (On&Out study)

Introduction: The On&amp;Out study is aimed at assessing the effectiveness, cost-utility and physiological underpinnings of the FIBROWALK multicomponent intervention conducted in two different settings: online (FIBRO-On) or outdoors (FIBRO-Out). Both interventions have proved to be efficacious in the short-term but there is no study assessing their comparative effectiveness nor their long-term effects. For the first time, this study will also evaluate the cost-utility (6-month time-horizon) and the effects on immune-inflammatory biomarkers and Brain-Derived Neurotrophic Factor (BDNF) levels of both interventions. The objectives of this 6-month, randomized, controlled trial (RCT) are 1) to examine the effectiveness and cost-utility of adding FIBRO-On or FIBRO-Out to Treatment-As-Usual (TAU) for individuals with fibromyalgia (FM); 2) to identify pre–post differences in blood biomarker levels in the three study arms and 3) to analyze the role of process variables as mediators of 6-month follow-up clinical outcomes.

Methods and analysis: Participants will be 225 individuals with FM recruited at Vall d’Hebron University Hospital (Barcelona, Spain), randomly allocated to one of the three study arms: TAU vs. TAU + FIBRO-On vs. TAU + FIBRO-Out. A comprehensive assessment to collect functional impairment, pain, fatigue, depressive and anxiety symptoms, perceived stress, central sensitization, physical function, sleep quality, perceived cognitive dysfunction, kinesiophobia, pain catastrophizing, psychological inflexibility in pain and pain knowledge will be conducted pre-intervention, at 6 weeks, post-intervention (12 weeks), and at 6-month follow-up. Changes in immune-inflammatory biomarkers [i.e., IL-6, CXCL8, IL-17A, IL-4, IL-10, and high-sensitivity C-reactive protein (hs-CRP)] and Brain-Derived Neurotrophic Factor will be evaluated in 40 participants in each treatment arm (total n = 120) at pre- and post-treatment. Quality of life and direct and indirect costs will be evaluated at baseline and at 6-month follow-up. Linear mixed-effects regression models using restricted maximum likelihood, mediational models and a full economic evaluation applying bootstrapping techniques, acceptability curves and sensitivity analyses will be computed.

Ethics and dissemination: This study has been approved by the Ethics Committee of the Vall d’Hebron Institute of Research. The results will be actively disseminated through peer-reviewed journals, conference presentations, social media and various community engagement activities. Trial registration number NCT05377567 (clinicaltrials.gov).

Efficacy of Acupuncture, Intravenous Lidocaine, and Diet in the Management of Patients with Fibromyalgia: A Systematic Review and Network Meta-Analysis

Introduction: This network meta-analysis aimed to assess the efficacy of acupuncture, intravenous lidocaine, and diet compared with other comparators such as physiotherapy and sham/placebo in fibromyalgia patients. Materials and Methods: We searched Embase, PubMed, Scopus, and Web of Science for relevant studies till September 2021. The included studies were randomized controlled clinical trials. For the network meta-analysis, we used the R software. Results: There were 23 included RCTs. The total sample size was 1409 patients. Compared with the sham/placebo group, the network analysis showed the highest improvement in the quality of life in the acupuncture group standardized mean difference (SMD) = −10.28, 95%-CI [−14.96; −5.59]), and then in the physiotherapy group (SMD = −7.48, 95%-CI [−14.72; −0.23]). For the pain, there was a significant reduction with acupuncture (SMD = −1.69, 95%-CI [−2.48; −0.89]), compared with sham/placebo. Regarding depression, it showed a significant reduction with acupuncture (SMD = −9.64, 95%-CI [−16.13; −3.14]) compared with sham/placebo. Finally, for stiffness, it showed no significant differences in the stiffness between acupuncture (SMD = −8.52, 95%-CI [−20.40; 3.36]), fluoxetine (SMD = −6.52, 95%-CI [−29.65; 16.61]), and physiotherapy (SMD = −4.64, 95%-CI [−22.83; 13.54]) compared with sham/placebo. Conclusions: The acupuncture showed a significant effect in the management of fibromyalgia patients. It reduced pain, depression, and enhanced the quality of life. While physiotherapy showed a significant improvement in the quality of life only. In contrast, intravenous lidocaine and diet showed no significant differences when compared with sham/placebo.

Pain-Related Worrying and Goal Preferences Determine Walking Persistence in Women with Fibromyalgia

Physical activity and exercise are relevant behaviors for fibromyalgia health outcomes; however, patients have difficulties undertaking and maintaining an active lifestyle. With a cross-sectional design, this study explored the role of pain-related worrying and goal preferences in the walking persistence of women with fibromyalgia. The sample included 111 women who attended a tertiary health setting. We adapted the Six-Minute Walk Test where participants decided either to stop or continue walking in five voluntary 6 min bouts. Women who were categorized higher in pain-related worrying reported higher preference for pain avoidance goals (t = -2.44, p = 0.02) and performed worse in the walking task (LongRank = 4.21; p = 0.04). Pain avoidance goal preference increased the likelihood of stopping after the first (OR = 1.443), second (OR = 1.493), and third (OR = 1.540) 6 min walking bout, and the risk of ending the walking activity during the 30 min task (HR = 1.02, [1.0-1.03]). Influence of pain-related worrying on total walking distance was mediated by goal preferences (ab = -3.25). In interventions targeting adherence in physical activity and exercise, special attention is needed for women who are particularly worried about pain to help decrease their preference for short-term pain avoidance goals relative to long-term goals such as being active through walking.

Exploring the Preference for Fatigue-avoidance Goals as a Mediator Between Pain Catastrophizing, Functional Impairment, and Walking Behavior in Women With Fibromyalgia

OBJECTIVES

Along with the symptoms of pain and fatigue, pain catastrophizing and avoidance behaviors are highly prevalent and associated with functional impairment in fibromyalgia (FM) patients. Although pain and fatigue affect patients' quality of life, research has been exclusively focused on how pain affects physical activity and exercise. The aim of this study was to analyze the role of pain catastrophizing and preference for fatigue-avoidance goals in walking behavior and functional impairment in women with FM.

MATERIALS AND METHODS

In this cross-sectional study the sample was composed of 76 participants aged 18 years and older (mean age=55.05, SD=7.70). The study evaluated pain catastrophizing, preference for fatigue-avoidance goals, functional impairment, and walking behavior along with sociodemographic variables and clinical data.

RESULTS

Pain catastrophizing was associated with preference for fatigue-avoidance goals and this preference was associated with greater functional impairment and less distance walked. Path analysis supported the mediating role of preference for fatigue-avoidance goals in the relationship between pain catastrophizing and walking behavior and between pain catastrophizing and functional impairment. Furthermore, pain catastrophizing predicted greater preference for fatigue-avoidance goals which predicted more problems in functioning and less distance walked.

DISCUSSION

The present study may help clarify the connection between the factors that stop individuals with FM from implementing beneficial behaviors such as walking, and thus, allowing for the design of psychological interventions that seek to maintain physical functioning despite experiencing fatigue.

Effectiveness of a Multicomponent Treatment Based on Pain Neuroscience Education, Therapeutic Exercise, Cognitive Behavioral Therapy, and Mindfulness in Patients With Fibromyalgia (FIBROWALK Study): A Randomized Controlled Trial

OBJECTIVE

The purpose of this study was to evaluate the effectiveness of a 12-week multicomponent treatment based on pain neuroscience education, therapeutic exercise, cognitive behavioral therapy, and mindfulness-in addition to treatment as usual-compared with treatment as usual only in patients with fibromyalgia.

METHODS

This randomized controlled trial involved a total of 272 patients who were randomly assigned to either multicomponent treatment (n = 135) or treatment as usual (n = 137). The multicomponent treatment (2-hour weekly sessions) was delivered in groups of 20 participants. Treatment as usual was mainly based on pharmacological treatment according to the predominant symptoms. Data on functional impairment using the Revised Fibromyalgia Impact Questionnaire as the primary outcome were collected as were data for pain, fatigue, kinesiophobia, physical function, anxiety, and depressive symptoms (secondary outcomes) at baseline, 12 weeks, and, for the multicomponent group only, 6 and 9 months. An intention-to-treat approach was used to analyze between-group differences. Baseline differences between responders (>20% Revised Fibromyalgia Impact Questionnaire reduction) and nonresponders also were analyzed, and the number needed to treat was computed.

RESULTS

At posttreatment, significant between-group differences with a large effect size (Cohen d > 0.80) in favor of the multicomponent treatment were found in functional impairment, pain, kinesiophobia, and physical function, whereas differences with a moderate size effect (Cohen d > 0.50 and <0.80) were found in fatigue, anxiety, and depressive symptoms. Nonresponders scored higher on depressive symptoms than responders at baseline. The number needed to treat was 2 (95% CI = 1.7-2.3).

CONCLUSION

Compared with usual care, there was evidence of short-term (up to 3 months) positive effects of the multicomponent treatment for fibromyalgia. Some methodological shortcomings (eg, absence of follow-up in the control group and monitoring of treatment adherence, potential research allegiance) preclude robust conclusions regarding the proposed multicomponent program.

IMPACT

Despite some methodological shortcomings in the design of this study, the multicomponent therapy FIBROWALK can be considered a novel and effective treatment for patients with fibromyalgia. Physical therapists should detect patients with clinically relevant depression levels prior to treatment because depression can buffer treatment effects.

LAY SUMMARY

Fibromyalgia is prevalent and can be expensive to treat. This multicomponent treatment could significantly improve the core symptoms of fibromyalgia compared with usual treatment.

Efficacy of the FIBROWALK Multicomponent Program Moved to a Virtual Setting for Patients with Fibromyalgia during the COVID-19 Pandemic: A Proof-of-Concept RCT Performed Alongside the State of Alarm in Spain

FIBROWALK is a multicomponent program including pain neuroscience education, therapeutic exercise, cognitive behavioral therapy and mindfulness training that has recently been found to be effective in patients with fibromyalgia (FM). This RCT started before the COVID-19 pandemic and was moved to a virtual format (i.e., online videos) when the lockdown was declared in Spain. This study is aimed to evaluate the efficacy of a virtual FIBROWALK compared to Treatment-As-Usual (TAU) in patients with FM during the first state of alarm in Spain. A total of 151 patients with FM were randomized into two study arms: FIBROWALK plus TAU vs. TAU alone. The primary outcome was functional impairment. Secondary outcomes were kinesiophobia, anxiety and depressive symptomatology, and physical functioning. Differences between groups at post-treatment assessment were analyzed using Intention-To-Treat (ITT) and completer approaches. Baseline differences between clinical responders and non-responders were also explored. Statistically significant improvements with small-to-moderate effect sizes were observed in FIBROWALK+TAU vs. TAU regarding functional impairment and most secondary outcomes. In our study, the NNT was 5, which was, albeit modestly, indicative of an efficacious intervention. The results of this proof-of-concept RCT preliminarily support the efficacy of virtual FIBROWALK in patients with FM during the Spanish COVID-19 lockdown.

Effects of Non-Pharmacological Treatment on Pain, Flexibility, Balance and Quality of Life in Women with Fibromyalgia: A Randomised Clinical Trial

Background: The functional deficits in people with fibromyalgia can be related to the level of physical activity performed. This study investigated the effectiveness of an active exercise programme versus exercise for well-being improving pain, flexibility, static balance, perceived exertion and quality of life of women with fibromyalgia; Methods: A randomised, single-blind, controlled trial was conducted. A total of 141 of women diagnosed with fibromyalgia were enrolled and randomised to an active exercise program group (n = 47), where they performed physical active exercises, an exercise for well-being group (n = 47), which performed the Qi Gong exercises named ‘the twenty Wang Ziping figures for health and longevity’, and a control group (n = 47), which did not receive any intervention, for a period of 4 weeks. Measures were taken at baseline and after the treatment. The primary outcome measures were static balance and centre of gravity (Wii-Fit Nintendo ©), flexibility (test de Wells and Dillon), pain (Visual Analogue Scale) and quality of life (Spanish-Fibromyalgia Impact Questionnaire). The secondary outcome measure was the perceived exertion during activity (BORG Scale). Results: In total, 93 participants completed the study. The mean value of the age was 52.24 ± 6.19. The post intervention results showed statistically significant improvements in the exercise for well-being and the active exercise programme groups vs. the control group in relation to pain (p = 0.006 active exercise programme group, p = 0.001 exercise for well-being group), static balance (p < 0.001 active exercise programme group) and quality of life (p < 0.001 active exercise programme group, p = 0.002 exercise for well-being group). In addition, the mean scores related to perceived fatigue during the sessions were 6.30 ± 1.88 for the active exercise programme group and 5.52 ± 1.55 for the exercise for well-being group. These differences were not significant. Conclusions: The active exercise program and exercise for well-being improved flexibility, static balance, pain and quality of life of women with fibromyalgia. The participants of the active exercise programme achieved better results that those of the exercise for well-being.

Effects of Physiotherapy vs. Acupuncture in Quality of Life, Pain, Stiffness, Difficulty to Work and Depression of Women with Fibromyalgia: A Randomized Controlled Trial

BACKGROUND

Fibromyalgia is a chronic clinical condition characterized by pain and other associated symptoms that have a negative impact on the quality of life of the affected person. The objective of this study was to assess the effectiveness of a core stability training physiotherapy program compared to an acupuncture treatment on quality of life, pain, joint stiffness, difficulty to work and depression of women with fibromyalgia.

METHODS

This was a single-blind, randomized clinical controlled trial. Women with fibromyalgia were randomized to a core stability physiotherapy program group (n = 45), an acupuncture treatment group (n = 45) and a control group (n = 45) for 13 weeks. Measurements were taken at baseline (week 0), post-intervention (week 6) and at follow-up (week 13). The primary outcome measure was quality of life (Spanish Fibromyalgia Impact Questionnaire). The secondary outcome measures were pain, joint stiffness, difficulty to work and depression (Visual Analogue Scale).

RESULTS

In total, 103 participants completed the study. The results, from a descriptive perspective, showed improvements in all the outcome measures in both intervention groups (physiotherapy and acupuncture) at weeks 6 and 13 in relation to week 0 and in comparison to the control group. Only the difficulty to work measure in the acupuncture group showed a slight decrease at week 13. In particular, mean (±SD) Spanish Fibromyalgia Impact Questionnaire score at 6 weeks was 62.89 ± 16.91 for the physiotherapy group, 62.5 ± 18.09 for the acupuncture group and 67.45 ± 17.07 for the control group. However, these improvements were not statistically significant.

CONCLUSION

Core stability-based physiotherapy and acupuncture showed non-significant improvements in quality of life, pain, joint stiffness, difficulty to work and depression in women with fibromyalgia.

Hypnotic intervention in people with fibromyalgia: A randomized controlled trial

Fibromyalgia affects the quality of life of the patients, as well as their family. It also affects their social, labor, physical, and psychological dynamics. We aimed to evaluate the effectiveness of audio-recorded hypnosis in ameliorating fibromyalgia symptoms. We enrolled 97 individuals with fibromyalgia (mean age: 45 years) and randomly distributed them to two groups (48 in the experimental group and 47 in the control group). Individuals in both groups maintained their standard pharmacological treatment and continued their usual physical or psychological activities. The experimental group received an audio-recorded hypnosis intervention in the first session; subsequently, they received another audio hypnosis session to use for daily practice for a month. We evaluated the pre- and post-intervention pain intensity, pain interference, fatigue intensity, fatigue interference, depressive symptomatology, and satisfaction with life. We found that the self-administered audio-recorded hypnotic intervention significantly decreased the intensity and interference of pain and fatigue, as well as the depressive symptomatology. Audio-recorded clinical hypnosis techniques could provide an effective, practical, and economical alternative for reducing fibromyalgia-related symptoms.

Promoting unsupervised walking in women with fibromyalgia: a randomized controlled trial

The objective of this study is to test the efficacy of a group motivational plus implementation intentions intervention in promoting adherence to an unsupervised walking program recommended for fibromyalgia, compared to an implementation intentions condition and to an active control condition. A triple-blind, randomized, longitudinal study with measures at baseline, short (seven weeks post-intervention), mid (12 weeks) and long-term (36 weeks) is performed. Data are analyzed using multilevel longitudinal growth curve two-level modelling. Participants are 157 women with fibromyalgia. In the short-term, adherence to the minimum and to the standard walking program (primary outcome measures) is explained by time (both p <.001), motivational plus implementation intentions intervention (both p <.001) and by their interaction (both p <.001). Regarding the secondary outcomes, only physical function is explained by time (p <.001), motivational plus implementation intentions intervention (p <.05) and by their interaction (p <.05). Motivational plus implementation intentions intervention achieve the promotion of walking as an exercise in the short-term; furthermore, physical function of the women in this condition is better than in the other two intervention groups, which is a relevant outcome from a rehabilitation point of view. However, more studies are needed to maintain the exercise at mid and long-term.

Hypothalamic-pituitary axis response to a 0.25-MG dexamethasone test in women with fibromyalgia

Fibromyalgia has been reported as having some clinical overlap with both depression and emotionally-unstable disorders, although both types of disorders present different cortisol suppression response to dexamethasone. In this study we investigated the hypothalamic-pituitary-adrenal system (HPA) in the fibromyalgic syndrome (FMS) using a dexamethasone suppression test (DST) of 0.25 mg designed to specifically detect cortisol hypersuppression. We studied 59 women (20 patients and 39 healthy controls) to whom the DST was administered together with a battery of psychometric tests. In our results, patients with FMS had significant lower levels of basal cortisol pre- and post-DST compared with control subjects. However, cortisol suppression rate in patients after DST was not significantly different than in controls. As other syndromes like post-traumatic stress disorder or emotionally unstable personality disorders, also related with high incidence of severe trauma, FMS patients presented significant low basal cortisol. However, they did not have cortisol hypersuppression as is commonly found in the mentioned disorders. The relation of FMS with lifetime traumas and with emotional instability should be further investigated in order to improve psychological treatment approaches for these patients.LAY SUMMARYPatients with fibromyalgic syndrome have basal hypocortisoism but no cortisol hypersuppression after dexamethasone infusion compared to control subjects, as other trauma-related syndromes.

Effects of Monopolar Dielectric Radiofrequency Signals on the Symptoms of Fibromyalgia: A Single-Blind Randomized Controlled Trial

Monopolar dielectric radiofrequency (MDR) is a non-invasive treatment for pain based on the local application of electromagnetic signals. The study’s goal was to analyze the effects of MDR on the symptoms of fibromyalgia. For this aim, a randomized controlled trial was conducted on 66 female participants (aged 47 ± 17.7) diagnosed with fibromyalgia. Participants were randomly allocated to either an experimental group (n = 23), which received eight 20-minute sessions of MDR; a sham group, which received the same number of sessions of a sham MDR therapy (n = 22); or a control group (n = 21), which received usual care. The outcome variables included pain measured by the visual analogue scale (VAS), score on the hospital anxiety and depression scale (HADS) and quality of life measured by the combined index of fibromyalgia severity (ICAF). A large effect size was observed for the local pain (R² = 0.46), total ICAF (R² = 0.42) and ICAF physical factor scores (R² = 0.38). Significant mean differences were found for the local pain (p = 0.025) and ICAF physical factor (p = 0.031) scores of the experimental group in comparison with the sham group. No statistically significant differences between groups were found in HADS. In conclusion, MDR is more effective than either sham treatment or usual care in the short-term improvement of pain and the physical wellbeing of participants with fibromyalgia.

Effectiveness of acupuncture vs. core stability training in balance and functional capacity of women with fibromyalgia: a randomized controlled trial

Objective:

This study investigated the effectiveness of a core stability training physiotherapy programme vs. acupuncture for the management of balance and functional capacity impairments of women with Fibromyalgia.

Design:

Single-blind randomized controlled trial.

Setting:

Outpatients setting.

Subjects:

Women with Fibromyalgia and balance impairment.

Interventions:

Participants were randomized to a core stability physiotherapy programme group ( n = 45), acupuncture treatment group ( n = 45) and control group ( n = 45) for 13 weeks.

Main Measures:

Measures were taken at baseline (week 0), postintervention (week 6) and follow-up (week 13). The primary outcome measures were static balance (posturography) and dynamic balance and functional mobility (Berg Balance Scale, timed up and go test and 10-m walk). The secondary outcome measure was functional capacity (Fibromyalgia Health Assessment Questionnaire and the physical function item from the Spanish Fibromyalgia Impact Questionnaire).

Results:

In all, 103 participants completed the study. The results showed statistically significant improvements in the acupuncture and physiotherapy groups vs. the control group at week 6 regarding Berg Balance Scale ( P = 0.00, both groups), timed up and go test ( P = 0.00 and P = 0.01, respectively) and 10-m walk test at comfortable speed ( P = 0.02 and P = 0.03, respectively). The 10-m walk test at maximum speed showed significance when comparing the physiotherapy and control group ( P = 0.03). However, no significant differences were found between the physiotherapy and the acupuncture groups. In relation to functional capacity, the improvements achieved after the treatments were not statistically significant.

Conclusion:

Core stability-based physiotherapy and acupuncture improve dynamic balance and postural control in women with Fibromyalgia.

Pain assessment in Spanish rheumatology outpatient clinics: EVADOR Study

INTRODUCTION

rheumatic diseases are the most frequent cause of non-malignant chronic pain. In recent years, pain and its management have become more important in rheumatology.

OBJECTIVES

to estimate the prevalence and characteristics of pain associated with rheumatic pathology treated in rheumatology clinics in Spain, as well as their treatment and response to it.

METHODS

Multicentre observational study with two phases (cross-sectional and prospective). Variables were collected from the doctor, patient, pain and its management, comorbidities, therapeutic response and related psychosocial aspects. The differences between de novo (NP) vs follow-up (FP) patients were analyzed.

RESULTS

34 centres and 1084 patients were included, 32% NP and 68% FP. Pain was present in 86%, was chronic in 81% and neuropathic in 12% of the surveyed population. Fifty percent of the patients would regard their pain as tolerable if its intensity according to the visual numeric scale (VNS) was≤2. Among the FP it was more frequent to have the perception of controlled pain (65.5% vs 49.4%) and to be satisfied with the treatment (53.3% vs. 35.6%). Of these patients, 23.5% had been treated with opioids in the previous month.

CONCLUSIONS

In the last decade, the prevalence of pain in rheumatology in Spain remains high, although it has diminished. The use of opioids, on the other hand, has increased.

Effectiveness of health education in patients with fibromyalgia: a systematic review

INTRODUCTION

Fibromyalgia (FM) is a chronic illness characterized by the presence of generalised musculoskeletal pain among other symptoms, which reduce the quality of life of the patient. Clinical interventions such as patient education on central pain management could lead to promising results. The aim of this study is to evaluate the effectiveness of education techniques on the main symptoms such as pain, quality of life, anxiety, functionality or catastrophization in the treatment of FM.

EVIDENCE ACQUISITION

The bibliographic search was carried out on PubMed, Web of Science, Scopus, CINAHL, EMBASE, Medline, ProQuest, Cochrane Plus and PEDro databases. The quality assessment of the selected studies was carried out by means of the PEDro scale, obtaining external and internal validity scores to evaluate the generalizability and the appropriateness of design, conduction, and reporting.

EVIDENCE SYNTHESIS

The electronic search produced 2,050 articles up to February 2018. After applying the inclusion criteria, 12 articles were identified, without the presence of any RCT of high methodological quality (PEDro≤8; Internal Validity Score [PVI] ≤4). Despite the heterogeneity of the interventions, a significant reduction in the perception of the disease, the catastrophization, pain intensity and anxiety was observed.

CONCLUSIONS

Patient education is considered to be the first step in self-management for a patient with FM, but the scientific evidence that supports the effectiveness of education in the reduction of the main symptoms is limited. Future research designed on more solid and homogeneous interventions is required.

Levels of brain-derived neurotrophic factor in patients with fibromyalgia and chronic low back pain: Results of an aquatic physical therapy protocol

Objectives: This work aims to assess changes in brain-derived neurotrophic factor (BDNF) levels in women after the practice of a specific short duration 10-session aquatic physical therapy protocol in patients with fibromyalgia (FB).

Methods: Case–control study. Thirteen women diagnosed with FB and 11 controls with the same age group, 35–55 years. Patients were evaluated according to the visual analog scale of pain and the fibromyalgia impact questionnaire (FIQ). All were subjected to a short protocol totaling 10 sessions of 40 min twice a week for five weeks. Heart rate and pain were monitored. BDNF levels were measured using enzyme immunoassay.

Results: A statistically significant increase in BDNF values was noted in patients with FB between the pre- and post-10th session assessments (mean of 35.52–41.96; p = 0.041).

Conclusion: BDNF values may present fluctuations during a short duration moderate aerobic exercise protocol, when measured and analyzed in a longitudinal design. Further studies with a more frequent BDNF evaluation could help in understanding its behavior more accurately and are warranted.

Effects of Mindfulness Training on Sleep Problems in Patients With Fibromyalgia

Fibromyalgia syndrome (FMS) is a complex psychosomatic pain condition. In addition to generalized pain and various cognitive difficulties, new FMS diagnostic criteria acknowledge fatigue and sleep problems as core aspects of this condition. Indeed, poor sleep quality has been found to be a significant predictor of pain, fatigue, and maladaptive social functioning in this patient group. While there is promising evidence supporting the role of mindfulness as a treatment for FMS, to date, mindfulness intervention studies have principally focused on dimensions of pain as the primary outcome with sleep problems either not being assessed or included as a secondary consideration. Given the role of sleep problems in the pathogenesis of FMS, and given that mindfulness has been shown to improve sleep problems in other clinical conditions, the present study explored the effects of a mindfulness-based intervention known as Flow Meditation (Meditación-Fluir) on a range of sleep-related outcomes (subjective insomnia, sleep quality, sleepiness, and sleep impairment) in individuals with FMS. Adult women with FMS (n = 39) were randomly assigned to the 7 weeks mindfulness treatment or a waiting list control group. Results showed that compared to the control group, individuals in the mindfulness group demonstrated significant improvements across all outcome measures and that the intervention effects were maintained at a 3 month follow-up assessment. The Meditación-Fluir program shows promise for alleviating sleep problems relating to FMS and may thus have a role in the treatment of FMS as well as other pain disorders in which sleep impairment is a central feature of the condition.

Fibromyalgia: Prevalence, epidemiologic profiles and economic costs

Fibromyalgia is an idiopathic chronic condition that causes widespread musculoskeletal pain, hyperalgesia and allodynia. This review aims to approach the general epidemiology of fibromyalgia according to the most recent published studies, identifying the general worldwide prevalence of the disease, its basic epidemiological profiles and its economic costs, with specific interest in the Spanish and Comunidad Valenciana cases. Fibromyalgia affects, on average, 2.10% of the world's population; 2.31% of the European population; 2.40% of the Spanish population; and 3.69% of the population in the Comunidad Valenciana. It supposes a painful loss of the quality of life of the people who suffer it and the economic costs are enormous: in Spain is has been estimated at more than 12,993 million euros annually.

Does volume of physical exercise have an effect on depression in patients with fibromyalgia?

BACKGROUND

Fibromyalgia Syndrome (FMS) is a musculoskeletal disorder frequently associated with depression. We aimed to investigate the association between physical exercise (PE) and depression in patients with FMS, and to evaluate the effect of the weekly volume of PE on depression.

METHODS

A total of 215 FMS patients with depression were evaluated with the Beck Depression Inventory, and were also classified as inactive, insufficiently active, or active. We performed binary logistic regression, with PE as the dependent variable and the level of depression as an independent variable. We also used the Mann-Whitney U test. An alpha value of 0.05 was determined to have significance (p<0.05).

RESULTS

Inactive patients with FMS have a higher rate of moderate to severe depression (29.1%) and major depression (25%) when compared with active patients. In comparing the depression index between inactive, insufficiently active, and active FMS patients according to the reported weekly volume of PE, we observed differences between inactive and active patients (p=0.035). The level of depression was positively associated with physical inactivity in FMS, and FMS patients with severe depression had 3.45 1.23-9.64) times the likelihood of being inactive than patients without depression or with minimal depression.

LIMITATIONS

The classification of PE does not distinguish between types of PE, or whether differences in activity can have different results in depression.

CONCLUSION

There was an association between PE and lower values of depression in patients with FMS, and the level of depression was positively and significantly associated with physical inactivity.

Doctor-Patient Relationship Between Individuals With Fibromyalgia and Rheumatologists in Public and Private Health Care in Mexico

The aim of this article was to describe and analyze the doctor-patient relationship between fibromyalgia patients and rheumatologists in public and private health care contexts within the Mexican health care system. This medical anthropological study drew on hospital ethnography and patients' illness narratives, as well as the experiences of rheumatologists from both types of health care services. The findings show how each type of medical care subsystem shape different relationships between patients and doctors. Patient stigmatization, overt rejection, and denial of the disease's existence were identified. In this doctor-patient-with-fibromyalgia relationship, there are difficult encounters, rather than difficult patients. These encounters are more fluid in private consultations compared with public hospitals. The doctor-centered health care model is prevalent in public institutions. In the private sector, we find the characteristics of the patient-centered model coexisting with the traditional physician-centered approach.

Body mass index and response to a multidisciplinary treatment of fibromyalgia

The purpose of this study is to determine whether there are some differences in the treatment responses to a multidisciplinary fibromyalgia (FM) treatment related with the baseline body mass index (BMI) of the participants. Inclusion criteria consisted of female sex, a diagnosis of FM (American College of Rheumatology criteria), age between 18 and 60 years, and between 3 and 8 years of schooling. Baseline BMI was determined, and patients were randomly assigned to one of the two treatment conditions: conventional pharmacologic treatment or multidisciplinary treatment. Outcome measures were pain intensity, functionality, catastrophizing, psychological distress, health-related quality of life, and sleep disturbances. One hundred thirty patients participated in the study. No statistical significant differences regarding pre-treatment outcomes were found among the different BMI subgroups, and between the two experimental conditions for each BMI category. General linear model analysis showed a significant interaction group treatment × time in pain intensity (p < .01), functionality (p < .0001), catastrophizing (p < .01), psychological distress (p < .0001), sleep index problems (p < .0001), and health-related quality of life (p < .05). No significant interactions were found in BMI × time, and in BMI × group treatment × time. There are not differences among normal weight, overweight and obese patients with FM regarding their response to a multidisciplinary treatment programme for FM which combines pharmacological treatment, education, physical therapy and cognitive behavioural therapy.

[Fibromyalgia patients' perceptions of the impact of the disease in the workplace]

Objetivo

Explorar las percepciones de pacientes con fibromialgia (FM) sobre los problemas que experimentan en el ámbito laboral, para analizar cómo se enfrentan a ellos y se adaptan a las limitaciones derivadas de los síntomas de esta enfermedad.

Diseño

Estudio cualitativo exploratorio realizado en 2009.

Emplazamiento

Asociaciones de pacientes con FM de la Comunidad Valenciana (España).

Participantes

Dieciséis personas (13 mujeres y 3 hombres) diagnosticadas de FM por un reumatólogo, de distintas edades y ocupaciones, seleccionadas a partir de informantes clave y por la técnica de bola de nieve.

Método

Muestreo pragmático. Entrevistas semiestructuradas hasta alcanzar la saturación de la información cuando no emergían contenidos nuevos. Análisis de contenido cualitativo utilizando el software informático Atlas.ti-5 para generar y asignar códigos, formar categorías e identificar un tema latente.

Resultados

Se identificaron 4 categorías: las dificultades para cumplir las exigencias laborales, la necesidad de apoyo social en el entorno laboral, las estrategias adoptadas para continuar trabajando y la resistencia a abandonar el mercado de trabajo. De forma transversal a estas categorías emergió un tema: la disposición de permanecer o reincorporarse al mercado laboral.

Conclusiones

Se requiere atender las necesidades específicas de los pacientes con el fin de que logren permanecer en el mercado laboral, de acuerdo a sus capacidades. Para ello, emerge la necesidad de programas de sensibilización sobre las consecuencias de la FM en el entorno laboral para lograr la colaboración de los directivos, empresarios, profesionales de Atención Primaria y médicos del trabajo.

Combining motivational and volitional strategies to promote unsupervised walking in patients with fibromyalgia: study protocol for a randomized controlled trial

Background

Fibromyalgia patients are often advised to engage in regular low- to moderate-intensity physical exercise. The need of fibromyalgia patients to walk has been stressed in previous research. Behavioral self-regulation theories suggest that a combination of motivational aspects (to develop or strengthen a behavioral intention: Theory of Planned Behavior) and volitional aspects (engagement of intention in behavior: implementation intentions) is more effective than a single intervention. In this paper, we describe a protocol for identifying the motivational processes (using the Theory of Planned Behavior) involved in the practice of walking (phase I) and for studying the efficacy of an intervention that combines motivational and volitional contents to enhance the acquisition and continuation of this exercise behavior (phase II). The paper also shows the characteristics of eligible individuals (women who do not walk) and ineligible populations (women who walk or do not walk because of comorbidity without medical recommendation to walk). Both groups consist of members of any of four patients’ associations in Spain who are between 18 and 70 years of age and meet the London Fibromyalgia Epidemiology Study Screening Questionnaire criteria for fibromyalgia. Furthermore, using this study protocol, we will explore the characteristics of participants (eligible women who agreed to participate in the study) and nonparticipants (eligible women who refused to participate).

Methods/design

Two studies will be conducted: Phase I will be a cross-sectional study, and phase II will be a triple-blind, randomized longitudinal study with two treatment groups and one active control group. The questionnaires were sent to a total of 2,227 members of four patients’ associations in Spain. A total of 920 participants with fibromyalgia returned the questionnaires, and 582 were ultimately selected to participate.

Discussion

The first data gathered have allowed us to identify the characteristics of the study population and they support the appropriateness of the inclusion criteria.. When the study is complete, the results will enable us to establish whether this kind of intervention can be used as a self-regulation tool for increasing and maintaining walking as unsupervised physical exercise of low to moderate intensity in fibromyalgia patients.

Trial registration

Trial registration number: ISRCTN68584893

[Effect of a physical activity programme in patients with fibromyalgia: a systematic review]

The aim of this review was to determine what type of physical activity programmes have been developed in patients with fibromyalgia and what are its effects and benefits on the degree of pain and quality of life. The search was performed in MEDLINE, Web of Science and SPORTDiscus databases. The word "fibromyalgia" was always used as a criterion for combined search (using "AND" connector) with physical activity, exercise, physical therapy and training (MeSH terms). Of the 2,531 initial results, 33 papers were selected for review. The studies reviewed focus primarily on dance activities, water activities, multidisciplinary, mind-body work, fitness and stretching. After applying the intervention program, the pain level was reduced between 10 and 44.2%, and the impact of the disease between 5.3 and 17.9%, improving the symptoms of these patients. In conclusion, a multidisciplinary programme (in which physical activity is included) may have positive effects on the quality of life of people with fibromyalgia.

[Impact of the fibromyalgia in the chronic fatigue syndrome]

BACKGROUND AND OBJECTIVE

Different studies have showed association of the chronic fatigue syndrome (CFS) with other pathologies, including fibromyalgia (FM). The objective of this study is to analyze whether there are differences in the clinic and in the assessment of fatigue in CFS patients associated or not with FM.

PATIENTS AND METHODS

A cross-sectional, single-site observational study was undertaken on a consecutive cases of a register of CFS patients at CFS Unit in Vall d'Hebron Hospital, Barcelona, from January 2008 until March 2011. The variables analyzed were FM comorbidity, sleep and fatigue characteristics and cognitive, neurological and autonomic symptoms. Questionnaires of fatigue impact scale, fatigue strength and impact on quality of life SF-36 were evaluated.

RESULTS

We included 980 CFS patients (mean age: 48±9 years; 91% women). Fibromyalgia was present in 528 patients (54%). The level of fatigue (P=.001) and pain (P<.001) was higher in FM patients. Patients with CFS and FM had more prevalence of sleep-related phenomena. The percentage of patients and the degree of severity of cognitive symptoms, neurological and autonomic dysfunction was higher in FM patients (P<.001). FM patients scored higher on the fatigue impact scale (P<.001) and showed worse results in the quality of life questionnaire (P<.001).

CONCLUSIONS

FM co-morbidity worse clinical parameters, fatigue and the perception of quality of life in CFS patients.

[Methodological fundamentals of the development of the guideline]

BACKGROUND

The scheduled update to the German S3 guidelines on fibromyalgia syndrome (FMS) by the Association of the Scientific Medical Societies ("Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften", AWMF; registration number 041/004) was planned starting in March 2011.

MATERIALS AND METHODS

The development of the guidelines was coordinated by the German Interdisciplinary Association for Pain Therapy ("Deutsche Interdisziplinären Vereinigung für Schmerztherapie", DIVS), 9 scientific medical societies and 2 patient self-help organizations. Eight working groups with a total of 50 members were evenly balanced in terms of gender, medical field, potential conflicts of interest and hierarchical position in the medical and scientific fields. Literature searches were performed using the Medline, PsycInfo, Scopus and Cochrane Library databases (until December 2010). The grading of the strength of the evidence followed the scheme of the Oxford Centre for Evidence-Based Medicine. The formulation and grading of recommendations was accomplished using a multi-step, formal consensus process. Efficacy, risks, patient preferences and applicability of therapies available were summarized into a balance sheet. The guidelines were reviewed by the boards of the participating scientific medical societies.

CONCLUSION

The guidelines were published in several forms: complete and short scientific versions, clinical practice and patient versions. The English full-text version of this article is available at SpringerLink (under "Supplemental").

A confirmatory study of the Combined Index of Severity of Fibromyalgia (ICAF*): factorial structure, reliability and sensitivity to change

Background

Fibromyalgia (FM) is a complex syndrome that affects many aspects of the patients life and it is very difficult to evaluate in clinical practice. A recent study has developed the Combined Index of Severity of Fibromyalgia (ICAF), an instrument that evaluates diverse aspects of FM and offers five indices: emotional, physical, active coping, passive coping and total. The objective of this study is to confirm the structure of the ICAF, check its test-retest reliability, assess its sensitivity to change, and compare the results obtained in a sample of patients with fibromyalgia with another sample of healthy controls.

Methods

A total of 232 patients took part in the study, 228 women and 4 men, with a mean age of 47.73 years of age (SD = 8.61) and a time of disease evolution since diagnosis of 4.28 years (SD = 4.03). The patients from the FM group completed the ICAF. Between one and two weeks later, they again attended the clinic and complete the 59 items on the ICAF (retest) and immediately afterwards they began treatment (according to daily clinical practice criteria). A sample of healthy subjects was also studied as a control group: 110 people were included (106 women and 4 men) with a mean age of 46.01 years of age (SD = 9.35). The study was conducted in Spain.

Results

The results obtained suggest that the four-factor model obtained in the previous study adequately fits the data obtained in this study. The test-retest reliability and internal consistency were all significant and show a high degree of correlation for all the factors as well as in overall score. With the exception of the passive coping factor, all the other scores, including the overall score, were sensitive to change after the therapeutic intervention. The ICAF scores of the patients with fibromyalgia compared with those of the control group were markedly different.

Conclusions

The findings suggest that the ICAF is a valid, reliable, sensitive to change instrument with the added advantage that it offers some additional domains (factors) that provide very valuable information regarding the most delicate aspects of the patient, which must be addressed at the time of treatment in daily clinical practice.