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Fibromyalgia is one of the most prevalent chronic pain disorders. Fibromyalgia is characterised by generalised pain. In addition, patients with fibromyalgia often have co-morbidity. Since no cure is available, the treatment is based on symptom management, with physical exercise being the recommended first-line treatment. Different exercise modalities have been examined, including the practice of stretching exercises. The aim of the systematic review is to summarise the efficacy of stretching exercises on fibromyalgia symptoms and to study the content and the quality of the current evidence. The review followed the recommendations of the PRISMA statement. The search for articles was performed in April 2023. We searched on MEDLINE, PubMed, CINAHL, Web of Science, SCOPUS, AMED, PEDro, ClinicalTrials.gov and the Cochrane Collaboration Trials Register. The search was updated in March 2024. The protocol was registered in PROSPERO. Risk of Bias was assessed using the Cochrane Risk of Bias tool, and quality assessment was performed using the GRADE approach. In total, 2586 studies were found in the database searches, of which nine were included in the analysis. The primary outcome was pain. Secondary outcomes were self-reported quality of life, fatigue and physical and mental functioning. The available evidence shows that stretching exercises may improve pain, health-related quality of life and physical and mental functioning, but the level of evidence is low. The main limitation is due to issues with the heterogeneity of the interventions and small sample sizes. Trial registration: PROSPERO registration number CRD42023399614. Key Points • Stretching exercises show promise in the treatment of fibromyalgia. They may improve pain, health-related quality of life, physical functioning and mental health, but the level of evidence is low. • This study goes beyond previous research by presenting a more comprehensive and detailed analysis of the content and methodological quality of the current evidence. • Further research with clearly outlined protocols must be carried out to advance our understanding of the benefits of stretching exercises on fibromyalgia symptoms., (© 2024. The Author(s), under exclusive licence to International League of Associations for Rheumatology (ILAR).)

Introduction: Walking is a beneficial healthy lifestyle for fibromyalgia patients as it reduces the intensity of pain and fatigue experienced and improves quality of life. In this context, self-efficacy and commitment are potential predictors of walking for women with fibromyalgia. Present study aims at examining the moderation role of exercise commitment in the association between self-efficacy for walking and walking behavior in this population., Method: It is a cross‑sectional study. A total of 132 women with fibromyalgia participated (mean age = 57.63, SD = 10.44) between January and December 2018. Self-efficacy about walking was assessed through Spanish version of self-efficacy scale for physical activity scale (SEPAS) and exercise commitment through ad-hoc questionnaire (two Likert-type items about the committed action of physical activity). Walking behavior was measured using accelerometers for seven consecutive days. Pain and fatigue prior to placement of the accelerometer were evaluated as possible covariates. Regarding medical history, time since onset of symptoms (i.e. pain, fatigue) and since diagnosis, and medication were also assessed as possible covariates., Results: A moderation effect of exercise commitment was found in the relationship between self-efficacy on walking behavior (B = 10.48, p = .021, 95%, CI = 0.61 to 6.79). Post-hoc analyses showed a significant and positive relationship between self-efficacy and walking only with high commitment to physical activity (t = 10.08, p = .027, 95%, CI = 3.77 to 5.64)., Conclusions: Self-efficacy for walking and commitment should be assessed and potentially targeted when focusing on increasing walking in women with fibromyalgia. Key Points • Associations between walking self-efficacy and exercise engagement provide indications of modifiable targets for promoting an active lifestyle in fibromyalgia. • When patients feel engaged in their physical exercise pattern (walking), patients feel more able to perform the behavior. • Rehabilitation interventions, focused on chronic pain, should contemplate the promotion of self-efficacy and engagement., (© 2024. The Author(s), under exclusive licence to International League of Associations for Rheumatology (ILAR).)

Objective: YouTube, a popular worldwide source to access health information online, may have an impact in enhancing exercise therapy for fibromyalgia patients. This study is aimed to investigate the quality and reliability of exercise videos prepared for fibromyalgia syndrome on YouTube., Methods: A thorough search on YouTube using six search terms related to fibromyalgia treatment and exercise was conducted. The videos with content on exercises for fibromyalgia, acceptable audio-video quality, and are in English language were included, whereas duplicates were excluded from the analysis. Quality was determined using the Global Quality Scale (GQS) and JAMA system, and reliability using the mDISCERN criteria., Results: Out of a total of 600 videos, 70 videos that met the inclusion criteria were included in the analysis. Physicians were found to produce content mostly in high and medium quality (%70.2), other medical professionals mostly in low and medium quality (93.8%), while non-medical users mostly in low quality (86.7%). Ninety percent of the videos targeted patients, while 10% targeted healthcare professionals as an audience, and the majority (93.7%) of videos targeting patients were of low and medium quality, as most (85.7%) of the videos targeting healthcare professionals were of high quality., Conclusion: YouTube can be used as a tool to increase exercise adherence in fibromyalgia patients, as it offers a wide range of content that is easily accessible and useful at times. To implement this tool, physicians need to upload more content online as they stand for pioneers of high-quality information dissemination on the internet. KeyPoints • This research emphasizes the need for high-quality online healthcare information which is accessed by a vast number of individuals and the implementations that effectively address and prevent the spread of misinformation. • Additionally, it presents suggestions for the future regarding the uploading of such content on the internet. • Physicians hold the key responsibility in ensuring the availability of high-quality online health content, thereby carrying significant implications for its overall impact., (© 2023. The Author(s), under exclusive licence to International League of Associations for Rheumatology (ILAR).)

Purpose: Aimed to evaluate the time elapsed between the onset of early symptoms and the diagnosis of fibromyalgia syndrome (FMS), the delays in diagnosis and frequent physician visits, increased tendencies of surgical treatment, and the effects of FMS symptoms on the post-surgical result., Patients and Methods: While there were 101 patients diagnosed with FMS in the 1st group, there were 100 patients in the 2nd group who presented with musculoskeletal complaints but were not diagnosed with FMS. In both groups, information on duration of complaints, time until diagnosis, and number of evaluating physicians were included. They were questioned in terms of whether they had undergone elective surgery before and after FMS diagnosis, and in terms of operation sites. Among these operations, the ones regarding the musculoskeletal system were evaluated, and the preoperative and postoperative, before and after FMS diagnosis., Results: It was determined that the diagnosis of FMS was made late; the number of doctor visits increased in the period until the diagnosis, and the rate of surgical treatment was higher than in patients without FMS. It was determined that the patients who were operated on after being diagnosed with FMS gained from the operation while the rate of gaining from surgery was lower in patients with FMS symptoms who were operated on before the diagnosis was made., Conclusion: The diagnosis of FMS reduces healthcare use, including referrals and examinations. Educating clinicians in the recognition and diagnosis of FMS will provide both patients and healthcare providers with benefits. Key Points • Early detection of FMS reduces healthcare utilization and expenditure, including referrals and examinations. • Educating clinicians in the recognition and diagnosis of FMS will provide both patients and healthcare providers with benefits. Therefore, it is important to understand why the diagnosis of FMS is made in a delayed manner. • Providing pragmatic tools to improve the methodology of primary care providers may help with diagnosing FMS accurately. • Early diagnosis and treatment of FMS may lead to a decrease in the number of operations and an improvement in the results of the operation., (© 2021. International League of Associations for Rheumatology (ILAR).)

Fibromyalgia is a chronic disease characterized by generalized skeletal muscle pain and the presence of mental disorders is common among patients. As there is no cure, several treatment alternatives have been investigated, including the practice of resistance training. Thus, the aim of the current study is to analyze the effects of resistance training on the mental health of patients with fibromyalgia. This is a systematic review of the literature that followed the recommendations of the PRISMA statement. The search for articles occurred in May 2020 in the databases PubMed, Embase, Science Direct, Web of Science, PEDro, and CINAHL, as well as Google Scholar for gray literature. The protocol was recorded in PROSPERO and assessment of quality was performed using the Cochrane tool. In total, 481 studies were found in the database searches, of which seven were included in the analysis. The only variables investigated in studies related to mental health were depression and anxiety. The results demonstrate that resistance training reduces symptoms of depression and anxiety in patients with fibromyalgia. It is concluded that resistance training is efficient to improve the mental health of patients with fibromyalgia, reducing depression and anxiety. The main limitation is that few variables related to mental health were analyzed. Key Points • Resistance training improves the mental health of patients with FM. • The most commonly studied variables related to mental health are depression and anxiety. • The study protocols are similar, starting with low-intensity training and gradually increasing the intensity., (© 2021. International League of Associations for Rheumatology (ILAR).)

In the medical literature, there are only a few references on refractory fibromyalgia and there is no consensus definition available on this concept. Some definitions of refractory fibromyalgia have been proposed based on the lack of response to a number of medications, and perhaps the most appropriate term is treatment-refractory fibromyalgia. To achieve the definition of treatment-refractory fibromyalgia, it is necessary to consider several previous steps, such as making sure the diagnosis has been made properly and a differential diagnosis with entities that can mimic fibromyalgia symptoms (including complete physical examination and laboratory test) has been made. The possibility that another factor that alters the response to treatment should be investigated, and in particular review all prescribed medication and search for some non-medical reasons that could mask the response to treatment (e.g., legal compensation). The definition of refractory fibromyalgia is complex and probably should include a lack of response to a specified number of drugs or to combination therapy with at least two non-pharmacological measures. In this article, it is not our purpose to present a formal definition, but to raise the possible bases for this purpose. We believe that it is a subject that must be discussed extensively before reaching a consensus definition. Key Points • There is no appropriate definition to classify fibromyalgia patients who do not respond to the usual pharmacological and non-pharmacological measures according to the national or international guidelines. • A consensus definition is required to classify these patients, which could help standardize future management strategies. In this article, we propose the bases on which refractory fibromyalgia could be defined., (© 2021. International League of Associations for Rheumatology (ILAR).)

Previous studies suggest personality, the multifaceted characteristics underlying a person's affect, cognition, and behavior, may influence fibromyalgia. We examined associations among personality, fibromyalgia impact, and health-related outcomes in patients with fibromyalgia. We further tested whether anxiety and depression mediated the effect of personality on fibromyalgia impact. We performed a secondary analysis using baseline data from a randomized trial on fibromyalgia. Personality was assessed using the NEO-Five Factor Inventory 3. Fibromyalgia impact was evaluated using the revised Fibromyalgia Impact Questionnaire (FIQR). We also measured symptom severity, anxiety, depression, stress, quality of life, social support, self-efficacy, outcome expectations, and mindfulness. Multivariable linear regression was performed to evaluate each association. Mediation analysis assessed whether anxiety and depression mediated the relationship between personality and FIQR. There were 92 participants, 95% female, mean age 52 years, body mass index (BMI) 30 kg/m 2 , 52% white, and mean duration of body pain 14 years. Higher neuroticism was significantly associated with higher FIQR (P = 0.002) and symptom severity (P = 0.008), as well as higher levels of anxiety, depression and stress, worse mental component quality of life, and lower self-efficacy, mindfulness, and social support. Higher conscientiousness and extraversion were associated with better psychological health and health-related outcomes. The effect of neuroticism on fibromyalgia impact was mediated by anxiety and depression. Personality was associated with fibromyalgia impact and a variety of health outcomes. Identifying the factors that influence fibromyalgia will help us better understand the condition and provide insight for more effective treatment.

The aim of this study was to assess the efficacy and tolerability of balneotherapy (BT) in patients with primary fibromyalgia syndrome (FS). In a prospective, randomized, controlled, double-blind trial with a 6-month follow-up, 100 FS patients were randomized to receive a cycle of BT with highly mineralized sulfate water (BT group) or with tap water (control group). Clinical assessments were performed at screening visit, at basal time, and after treatment (2 weeks, 3 and 6 months). The primary outcome measures were the change of global pain on the Visual Analogue Scale (VAS) and Fibromyalgia Impact Questionnaire total score (FIQ-Total) from baseline to 15 days. Secondary outcomes included Widespread Pain Index, Symptom Severity Scale Score, Short Form Health Survey, State-Trait Anxiety Inventory (STAI), and Center for Epidemiologic Studies Depression Scale. We performed an intent-to-treat analysis. The Kolmogorov-Smirnov test was applied to verify the normality distribution of all quantitative variables and the Student's t test to compare sample data. In the BT group, we observed a significant improvement of VAS and FIQ-Total at the end of the treatment that persisted until 6 months, while no significant differences were found in the control group. The differences between groups were significant for primary parameters at each time point. Similar results were obtained for the other secondary outcomes except for the STAI outcome. Adverse events were reported by 10 patients in the BT group and by 22 patients in the control group. Our results support the short- and long-term therapeutic efficacy of BT in FS., Trial Registration: NCT02548065.

The objective of this study is to examine the proportion of the total treatment effect that is attributable to contextual effects in randomised controlled trials (RCTs) of treatments for fibromyalgia. A systematic literature search was undertaken in Medline, Web of Science, EMBASE, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and Allied and Complementary Medicine in September 2015. The proportion of contextual effect (PCE) was calculated by dividing the improvement in the placebo arm by the improvement in the treatment arm. The measure was log-transformed for each trial and the random effects model was used to pool data. The primary outcome was pain. Secondary outcomes were fibromyalgia impact questionnaire (FIQ) total and fatigue. Heterogeneity was quantified using I 2 . Publication bias was assessed using a funnel plot and Egger's test. Subgroup analysis was undertaken to explore heterogeneity and potential determinants of the PCE. Fifty-one eligible trials (9599 participants) were identified. The PCE was 0.60 (95% CI 0·56 to 0·64) for pain, 0·57 (95% CI 0·53 to 0·61) for FIQ total, and 0·63 (95% CI 0·59 to 0·68) for fatigue. The I 2 was 99.4% for pain, 99.2% for FIQ total, and 97.6% for fatigue. More than half of the treatment effect in fibromyalgia RCTs results from non-specific contextual factors. This suggests that optimising contextual care may enhance treatment effects and improve outcomes. Reporting the total treatment effect and the proportion of contextual effect in trials may help to better translate research evidence into practice.

The aims of this study were to determine whether placebo treatment in randomised controlled trials (RCTs) is effective for fibromyalgia and to identify possible determinants of the magnitude of any such placebo effect. A systematic literature search was undertaken for RCTs in people with fibromyalgia that included a placebo and/or a no-treatment (observation only or waiting list) control group. Placebo effect size (ES) for pain and other outcomes was measured as the improvement of each outcome from baseline divided by the standard deviation of the change from baseline. This effect was compared with changes in the no-treatment control groups. Meta-analysis was undertaken to combine data from different studies. Subgroup analysis was conducted to identify possible determinants of the placebo ES. A total of 3912 studies were identified from the literature search. After scrutiny, 229 trials met the inclusion criteria. Participants who received placebo in the RCTs experienced significantly better improvements in pain, fatigue, sleep quality, physical function, and other main outcomes than those receiving no treatment. The ES of placebo for pain relief was clinically moderate (0.53, 95%CI 0.48 to 0.57). The ES increased with increasing strength of the active treatment, increasing participant age and higher baseline pain severity, but decreased in RCTS with more women and with longer duration of fibromyalgia. In addition, placebo treatment in RCTs is effective in fibromyalgia. A number of factors (expected strength of treatment, age, gender, disease duration) appear to influence the magnitude of the placebo effect in this condition.

The purpose of this study is to understand the course of costs over a 2-year period in a cohort of recently diagnosed fibromyalgia (FM) patients receiving different treatment strategies. Following the diagnosis, patients were randomly assigned to a multidisciplinary programme (MD), aerobic exercise (AE) or usual care (UC) without being aware of alternative interventions. Time between diagnosis and start of treatment varied between patients. Resource utilisation, health care costs and costs for patients and families were collected through cost diaries. Mixed linear model analyses (MLM) examined the course of costs over time. Linear regression was used to explore predictors of health care costs in the post-intervention period. Two hundred three participants, 90 % women, mean (SD) age 41.7 (9.8) years, were included in the cohort. Intervention costs per patient varied from €864 to 1392 for MD and were €121 for AE. Health care costs (excluding intervention costs) decreased after diagnosis, but before the intervention in each group, and increased again afterwards to the level close to the diagnostic phase. In contrast, patient and family costs slightly increased over time in all groups without initial decrease immediately after diagnosis. Annualised health care costs post-intervention varied between €1872 and 2310 per patient and were predicted by worse functioning and high health care costs at diagnosis. In patients with FM, health care costs decreased following the diagnosis by a rheumatologist. Offering patients a specific intervention after diagnosis incurred substantial costs while having only marginal effects on costs.

Fibromyalgia is characterized by widespread pain, sleep problems, fatigue, functional impairment, psychological distress, and cognitive dysfunction. The objective of this meta-analysis is to synthesize the available data on the effectiveness of pharmacological and non-pharmacological interventions across all domains included in the Outcome Measures in Rheumatology Clinical Trials (OMERACT-10) fibromyalgia response definitions, and to examine response based on these definitions. We searched Cochrane, PubMed, Scopus, and the reference lists of articles for randomized controlled trials of any drug formulation or non-pharmacological intervention used for fibromyalgia treatment. We extracted efficacy data regarding pain, sleep, physical function, fatigue, anxiety, depression, and cognition. The available data were insufficient to draw definite conclusions regarding response. Indirect evidence indicates that it may be expected with the use of serotonin noradrenaline reuptake inhibitors (SNRIs), noradrenaline reuptake inhibitors (NRIs), and multidisciplinary treatment.

The aim of the study was to determine the prevalence of musculoskeletal disorders and rheumatic diseases in an urban community in Venezuela. We conducted a cross-sectional, community-based study using the COPCORD (Community Oriented Program for Control of Rheumatic Diseases) methodology in subjects older than 18 years. Positive cases were evaluated by rheumatologists. We surveyed 3,973 individuals (1,606 males and 2,367 females), with a mean age of 43.7 years (standard deviation (SD) 17.6). Mean duration of education was 8.9 years (SD 3.7), 79.2 % had a monthly income of < US$569, and 46.4 % were working. Excluding trauma, the prevalence of pain in the 7 days prior to interview was 19.9 % (95 % confidence interval (CI) 18.7-21.2 %). Mean pain intensity on a visual analog scale was 6.3 (SD 2.2), and 30.1 % (95 % CI 28.7-31.6 %) had a history of pain. Respondents reported pain in the knees, back, hands, shoulders, and ankles in the last 7 days; 4.7 % described current functional limitation, with 16.5 % reporting limitations in the past. Regarding treatment, 23.9 % received medication, 6.4 % received physical therapy, and 2.6 % received alternative treatment. The main diagnoses were osteoarthritis in 15.0 % (95 % CI 13.9-16.1 %), rheumatic regional pain syndromes in 6.3 % (95 % CI 5.5-7.1 %), back pain in 2.8 % (95 % CI 2.3-3.4 %), rheumatoid arthritis in 0.4 % (95 % CI 0.2-0.6 %), crystal arthropathy in 0.3 % (95 % CI 0.1-0.5 %), fibromyalgia in 0.2 % (95 % CI 0.1-0.4 %), and systemic lupus erythematosus in 0.07 % (95 % CI 0.01-0.2 %). The prevalence of musculoskeletal disorders was 22.4 %, and the most prevalent disease was osteoarthritis. Pain, in which a patient is receiving treatment for musculoskeletal disorders, and physical disability were associated with the presence of a rheumatic disease.

Fibromyalgia (FM) has a high impact on all aspects of health. The effect from interventions is usually small and characterized by uncertainty. Better insight in predictors for improved health is essential. The present study aimed to understand predictors for patient global impression of change and changes in overall health. Data from a longitudinal cohort of recently diagnosed FM patients (n = 203) were used. Within this cohort, patients were pre-randomized to either a multidisciplinary (n = 108) or an, aerobic exercise (n = 47) program, or usual care (n = 48). Only a limited number of patients started with the programs (n = 86) or participated fully, i.e., attended >70 % of the scheduled sessions (n = 68). Patients completed questionnaires covering all components of the International Classification of Functioning, Disability and Health (ICF) bio-psycho-social model of health, which was used as a framework to structure potential predictors. Principal component analysis was used to reduce the number of potential predictors. Regression analyses were used to explore associations with the outcome variables. Principal component analysis yielded five factors representing areas that covered different ICF components and chapters. "Being employed" and "full participation in a program" were independently associated with a better global impression of change. A longer duration of FM-related symptoms and more limitations in physical areas of body functions were independently associated with a worse impression of overall health. Higher levels of perceived limitations in physical and mental activities were associated with "starting to participate in a program" and with "full participation in a program." Recently diagnosed FM patients that report fewer physical limitations may experience more improvement in health if they are at work and have a positive attitude towards participating in an offered health-care intervention. These findings give support to an active rather than to a care-avoiding attitude of health-care workers in their contacts to these patients.

This paper examines the clinical utility of the Hospital Anxiety and Depression Scale (HADS) in the context of evaluating the Fibromyalgia Outpatient Education Program at Southlake Regional Health Centre (Newmarket, Canada). A pre-test/post-test design was implemented for data analysis. A total of 232 patients' data were obtained through retrospective patient chart review. Complete pre-post data were available for 70 patients and qualitative analysis was done for 12 patients. Main outcome measures included HADS and Arthritis Self-Efficacy (ASE) scores. At the end of the education program, subgroups of patients (high attendance, high exercise habit, low medication) experienced significant improvement on HADS-depression and ASE scores. Linear regression analysis found that HADS pre-program scores explain far more variance in HADS post-test scores than ASE pre-program scores explain in ASE post-program scores; more variance in ASE post-program scores was explained by other variables. In contrast to the quantitative analysis of the Anxiety subscale of HADS, patients in the focus group indicated that their anxiety level decreased through attending the education program. These findings suggest that HADS is an appropriate tool for evaluating fibromyalgia and related patient education programs. Moreover, patient education programs have positive effects on enhancing patients' psychological well-being and self-confidence in controlling fibromyalgia-related symptoms.

Fibromyalgia is a chronic widespread pain disorder in which, the neurogenic origin of the pain, featured by allodynia and hyperalgesia, results from an imbalance in the levels of neurotransmitters and consequently of the peripheral pro- and anti-inflammatory mediators. Whole body cryotherapy is a peculiar physical therapy known to relieve pain and inflammatory symptoms characteristics of rheumatic diseases, through the regulation of the cytokine expression. The aim of this study was to qualitatively evaluate the effects of cryotherapy on the clinical output of fibromyalgic patients. A total of 100 fibromyalgic patients (age range 17-70 years) were observed; 50 subjects were addressed to cryotherapy, while the second group (n = 50) did not underwent to the cryotherapic treatment. All subjects kept the prescribed pharmacological therapy during the study (analgesic and antioxidants). The referred health status pre- and post-observation was evaluated with the following scales: Visual Analogue Scale, Short Form-36, Global Health Status and Fatigue Severity Scale. Fibromyalgic patients treated with cryotherapy reported a more pronounced improvement of the quality of life, in comparison with the non-cryo treated fibromyalgic subjects, as indicated by the scores of the qualitative indexes and sub-indexes, that are widely recognized tools to assess the overall health status and the effect of the treatments. We speculate that this improvement is due to the known direct effect of cryotherapy on the balance between pro- and anti-inflammatory mediators having a recognized role in the modulation of pain.

This study aimed to examine the effectiveness of a multidisciplinary intervention with aftercare (MD) compared to aerobic exercise (AE) and usual care (UC) in recently diagnosed patients with fibromyalgia (FM). In a Zelen-like design, eligible patients from the outpatient rheumatology clinics of three medical centres in the South of the Netherlands were consecutively recruited and pre-randomised to MD (n = 108), AE (n = 47) or UC (n = 48). MD consisted of a 12-week course of sociotherapy, physiotherapy, psychotherapy and creative arts therapy (three half days per week), followed by five aftercare meetings in 9 months. AE was given twice a week in a 12-week course. UC varied but incorporated at least education and lifestyle advice. Primary outcomes were health-related quality of life (HR-Qol), participation and health care utilisation. Secondary outcome was the Fibromyalgia Impact Questionnaire (FIQ). Total follow-up duration of the study was 21-24 months. As willingness to participate in AE was limited, this group has been analysed but interpretation of the data is considered arguable. Within the MD group, a statistically significantly improved HR-Qol and a statistically significant reduction in number of hours sick leave, number of contacts with general practitioners and number of contacts with medical specialists was found. Moreover, statistically significant improvements were found on the FIQ, which increased after the intervention. However, no statistically significant between-group differences were found at the endpoint of the study. MD seemed to yield positive effects, but firm conclusions with regard to effectiveness cannot be formulated due to small between-group differences and limitations of the study.

The aim of the study was to examine whether weight reduction can result in improvement of fibromyalgia impact questionnaire (FIQ) in the patients with fibromyalgia syndrome (FMS). This study was a randomized controlled trial. Obese patients with fibromyalgia were randomly assigned to 6-month dietary weight loss (n = 41) and no weight loss (n = 42) groups. Patients were assessed at baseline and at 6 months. The primary outcome measure was FIQ. Secondary measures included the tender point (TP) examination, Beck Depression Inventory-II, and Pittsburg Sleep Quality Index. Compared to the control group, patients who underwent weight reduction obtained significantly better FIQ (p = 0.007), lower mean TP count (p = 0.015), and lower mean TP pain rating in the lower body (p < 0.001). Patients who lost weight had less depression and better sleep quality than the controls. Patients who lost weight had significantly lower interleukin 6 and C-reactive protein levels than those in the control group (p = 0.034 and p = 0.007, respectively). Weight loss in obese patients with FMS leads to significant improvement in the quality of life as shown by the decrease in the FIQ score. Depression, sleep quality, and tender point count are also significantly improved by weight loss in obese patients with fibromyalgia. Our results suggest that weight reduction should be a part of fibromyalgia treatment.

Previous researchers have found that 10-form Tai chi yields symptomatic benefit in patients with fibromyalgia (FM). The purpose of this study was to further investigate earlier findings and add a focus on functional mobility. We conducted a parallel-group randomized controlled trial FM-modified 8-form Yang-style Tai chi program compared to an education control. Participants met in small groups twice weekly for 90 min over 12 weeks. The primary endpoint was symptom reduction and improvement in self-report physical function, as measured by the Fibromyalgia Impact Questionnaire (FIQ), from baseline to 12 weeks. Secondary endpoints included pain severity and interference (Brief Pain Inventory (BPI), sleep (Pittsburg sleep Inventory), self-efficacy, and functional mobility. Of the 101 randomly assigned subjects (mean age 54 years, 93 % female), those in the Tai chi condition compared with the education condition demonstrated clinically and statistically significant improvements in FIQ scores (16.5 vs. 3.1, p = 0.0002), BPI pain severity (1.2 vs. 0.4, p = 0.0008), BPI pain interference (2.1 vs. 0.6, p = 0.0000), sleep (2.0 vs. -0.03, p = 0.0003), and self-efficacy for pain control (9.2 vs. -1.5, p = 0.0001). Functional mobility variables including timed get up and go (-.9 vs. -.3, p = 0.0001), static balance (7.5 vs. -0.3, p    0.0001), and dynamic balance (1.6 vs. 0.3, p = 0.0001) were significantly improved with Tai chi compared with education control. No adverse events were noted. Twelve weeks of Tai chi, practice twice weekly, provided worthwhile improvement in common FM symptoms including pain and physical function including mobility. Tai chi appears to be a safe and an acceptable exercise modality that may be useful as adjunctive therapy in the management of FM patients. (ClinicalTrials.gov Identifier, NCT01311427).

Fibromyalgia is a controversial widespread chronic pain disorder that includes a wide constellation of somatic and emotional symptoms. This study surveyed the opinion of Ontario rheumatologists with respect to their beliefs about the nature and management of fibromyalgia. A key objective was to ascertain if rheumatologists should continue to be the main care providers for these patients. A survey comprising 13 questions was sent electronically to all 150 Ontario rheumatologists. The questionnaire was designed to obtain demographic data as well as opinions regarding different aspects of fibromyalgia. Data were analysed descriptively, and comparisons were made using chi-square tests. A total of 80 respondents completed our survey for a completion rate of 53 %. The majority had completed their training in Canada (85 %) and had been practising for more than 15 years (50 %). Key findings were: (1) 71 % believe that rheumatologists should not retain ownership of fibromyalgia, (2) 55 % believe that fibromyalgia is primarily a psychosomatic illness as opposed to a physical illness, (3) 89 % believe that the family physician should be the main care provider for these patients, and (4) rheumatologists who consider fibromyalgia to be a physical illness were also significantly more likely to believe that rheumatologists should retain ownership of this disease (p = 0.023) and were more likely to continue managing these patients in their practice (p = 0.011). The majority of Ontario rheumatologists do not wish to retain ownership of fibromyalgia. However, most of them continue to manage these patients, even though they believe that the family physician should be the main care provider for patients with fibromyalgia. Rheumatologists may be providing care to these patients primarily because this care is not available to them from their primary care physicians.

Customized foot orthotics are widely prescribed for patients with chronic, non-specific low back pain and lower limb pain, but there are few trials demonstrating effectiveness, and none for fibromyalgia. A total of 67 consecutive patients presenting with chronic, widespread pain, who met the 1990 American College of Rheumatology criteria for fibromyalgia, were included in the study. A total of 32 subjects were prescribed a spinal exercise therapy program along with analgesics. These subjects formed the Control group. A second group, comprised of 35 subjects, received the same therapy, along with customized foot orthotics (Orthotics group). All subjects completed the Revised Fibromyalgia Impact Questionnaire (FIQR) at the initiation of the study and at 8 weeks follow-up. The number of subjects using any type of prescription analgesic or other medication for chronic pain at baseline and at 8 weeks was also recorded. A total of 30 subjects in the Control group and 33 in the Orthotics group completed the study. All subjects completed the baseline and 8-week FIQR. The two groups were well matched in terms of age (45.3 ± 11.5 years in the Orthotics group vs. 47.2 ± 8.7 years in the cohort Control), medication use, duration of pain (6.5 ± 4.3 years in the Orthotics group vs. 6.2 ± 3.4 years in the cohort Control group), as well as baseline FIQR scores (55.2 ± 11.0 in the Orthotics group vs. 56.3 ± 12.2 in the cohort Control group). At 8 weeks, the Orthotics group had a greater reduction in the FIQR score than the cohort Control group (reduction of 9.9 ± 5.9 vs. 4.3 ± 4.4, respectively), and this was mainly due to changes in the 'function' domain of the FIQR (reduction of 19.6 ± 9.4 in the Orthotics group vs. 8.1 ± 4.3 in the cohort Control group). As part of a complex intervention, in a cohort-controlled trial of primary care patients with fibromyalgia, the addition of custom-made foot orthotics to usual care appears to improve functioning in the short term.

Treatments offered at the Maharishi Ayurveda Health Centre in Norway are based on Maharishi Vedic Medicine (MVM). MVM is a consciousness-based revival by Maharishi Mahesh Yogi, the founder of the Transcendental Meditation (TM) program of the ancient Ayurvedic medicine tradition in India. To extend from 6 to 24 months, a pilot study of the effects of the treatment program at the Health Centre on fibromyalgia. Retesting 2 years after a clinical trial. In this intention to treat study, 31 women with a diagnosis of fibromyalgia received an individually tailored program of (1) physiological purification therapy (Maharishi Panchakarma) and (2) Ayurvedic recommendations regarding daily routine and diet including a novel approach to food intolerance. Five subjects chose to learn TM for stress reduction, pain management and personal development. All were recommended Ayurvedic herbal products for follow-up treatment. A modified Fibromyalgia Impact Questionnaire (FIQ) that included seven dimensions. Scores at 24 months follow-up were compared with pre-treatment scores. At 24-months follow-up, there were significant reductions (26% to 44%) in six of the seven fibromyalgia dimensions: impairment of working ability, pain, tiredness, morning tiredness, stiffness and anxiety. The 7th, depression, decreased 32% (borderline significant). At 24 months, the four subjects who continued practising TM, had almost no symptoms and significantly lower FIQ change scores (-92% to 97%) than the non-meditators on all outcomes. This pilot study suggests that the treatments and health promotion programs offered at the Maharishi Ayurveda Health Centre in Norway lead to long-term reductions in symptoms of fibromyalgia, which is considered a treatment-resistant condition, and further studies are warranted.

Fibromyalgia (FM) is a chronic pain condition which is difficult to diagnose and to treat. Most individuals suffering from FM use a variety of complementary or alternative medicine (CAM) interventions to treat and manage their symptoms. The aim of this overview was to critically evaluate all systematic reviews of single CAM interventions for the treatment of FM. Five systematic reviews met the inclusion criteria, evaluating the effectiveness of homoeopathy, chiropractic, acupuncture, hydrotherapy and massage. The reviews found some evidence of beneficial effects arising from acupuncture, homoeopathy, hydrotherapy and massage, whilst no evidence for therapeutic effects from chiropractic interventions for the treatment of FM symptoms was found. The implications of these findings and future directions for the application of CAM in chronic pain conditions, as well as for CAM research, are discussed.

Evidence-based recommendations support the use of multimodal therapy and hydrotherapy for fibromyalgia syndrome; however, there is little standardisation of such programmes. The aim of the study was to assess the effectiveness of a pool-based exercise using deep water running (DWR) as part of a multimodal physiotherapy programme for patients with fibromyalgia syndrome. For a non-randomised clinical study, 44 patients diagnosed with fibromyalgia were recruited from primary care. Patients in the experimental group received a multimodal programme incorporating pool-based exercise using DWR three times a week for an 8-week period. The control group received a leaflet containing advice and continued with normal activities. Patients were evaluated for physical function (Fibromyalgia Impact Questionnaire, FIQ), pain, general health (Short Form-12 Health Survey) and quality of life (European Quality of Life Scale-5D) pre- and post intervention. Statistically significant results were found for the experimental group for FIQ total score, incorporating physical function, pain, fatigue, stiffness and psychological variables (p < 0.05). Statistically significant differences between the experimental group and control were also found for general health (p < 0.05) and quality of life (p < 0.05). The results of this pilot study and the high level of compliance and adherence and low level of attrition suggest that this multimodal programme incorporating DWR is a safe and effective intervention for fibromyalgia syndrome that is acceptable to patients.

Homoeopathy is often advocated for fibromyalgia (FM) and many FM patients use it. To critically evaluate all randomised clinical trials (RCTs) of homoeopathy as a treatment for FM, six electronic databases were searched to identify all relevant studies. Data extraction and the assessment of the methodological quality of all included studies were done by two independent reviewers. Four RCTs were found, including two feasibility studies. Three studies were placebo-controlled. None of the trials was without serious flaws. Invariably, their results suggested that homoeopathy was better than the control interventions in alleviating the symptoms of FM. Independent replications are missing. Even though all RCTs suggested results that favour homoeopathy, important caveats exist. Therefore, the effectiveness of homoeopathy as a symptomatic treatment for FM remains unproven.

Many patients use chiropractic as a treatment of fibromyalgia, and many chiropractors seem to be convinced that it is effective for that condition. The aim of the study was to conduct a systematic review of randomised clinical trials testing the effectiveness of chiropractic care for fibromyalgia. Six electronic literature searches were conducted. No language restrictions were applied. Data extraction and validation were carried out by two independent reviewers. Three studies met the inclusion criteria. Their methodological quality was poor. They generated no evidence to suggest that chiropractic care is effective for fibromyalgia. Currently, there is insufficient evidence to conclude that chiropractic is an effective treatment for fibromyalgia.

The objective of this study is to examine the feasibility and long-term results of a 12-week multidisciplinary part-time daycare intervention with five aftercare meetings in fibromyalgia (FM) patients. One hundred and five patients diagnosed with FM started with a multidisciplinary intervention and were assessed for feasibility, functional status (Fibromyalgia Impact Questionnaire [FIQ]), and quality of life (EuroQol-5D [EQ-5D]) until 9 months after completion. The program consisted of sociotherapy, physiotherapy, psychotherapy, and creative arts therapy. Drop-out rate was 4.8%. The attendance rate of 100 patients who completed the 12-week program and five aftercare meetings was high (97.4%), just like patient and therapist satisfaction (8.2 on a 10 points scale). After the 12-week program, statistically significant improvement was seen in both FIQ and EQ-5D. This improvement was maintained after 9 months of follow-up. On average, moderate improvements were observed. Our 12-week multidisciplinary part-time daycare intervention with five aftercare meetings for FM patients is feasible and it is indicated that it can lead to sustained improvement in functional status and quality of life.

The aim of the present study was to determine if there are differences in such parameters among patients affected by fibromyalgia (FM) and healthy subjects and whether the degree of affectation by FM can decrease the gait parameters. We studied 55 women with FM and 44 controls. Gait analysis was performed using an instrumented walkway for measurement of the kinematic parameters of gait (GAITRite system), and patients completed a Spanish version of Fibromyalgia Impact Questionnaire (FIQ). Significant differences (p < 0.001) between FM and control groups were found in velocity, stride length, cadence, single support ratio, double support ratio, stance phase ratio, and swing phase ratio. There were significant inverse correlations between FIQ and velocity, stride length, swing phase, and single support, whereas significant direct correlations were found with stance phase and double support. Gait parameters of women affected by FM were severely impaired when compared to those of healthy women. Different factors such as lack of physical activity, bradikinesia, overweight, fatigue, and pain together with a lower isometric force in the legs can be responsible for the alterations in gait and poorer life quality of women with FM.

Quality of life, functional status, or cumulated damage were compared between users and non-users of complementary and alternative medicine (CAM) in 445 rheumatic patients (rheumatoid arthritis [RA]: 64; systemic lupus erythematosus [SLE]: 192; fibromyalgia [FM]: 34; and knee osteoarthritis [KOA]: 155). CAM use was reported by 249 subjects (55.9%; 95%CI; 51.4-60.6). After a general linear model was applied, CAM use was associated with lower scores in the physical function (p = 0.02) and bodily pain (p = 0.03) domains of the SF-36 survey. In FM, RA and KOA, functional status was not different between users and non-users. CAM use was associated with higher cumulated damage (p = 0.04) in SLE. In patients with chronic rheumatic diseases, CAM use was not associated with better quality of life. Additionally, in SLE patients, CAM use was associated with higher cumulated damage. More research on CAM use in chronic rheumatic diseases is needed to better delineate its risk/benefit profile.

The objective of the study is to determine the effects of motivational interviewing (MI), a novel technique of behavioral counseling to promote exercise, on pain and physical function in patients with fibromyalgia (FMS). Patients who met the American College of Rheumatology criteria for FMS and had a visual analog pain score of > or =6 were enrolled in a single group intervention pilot study. Participants received two supervised exercise sessions and an exercise prescription. Thereafter, six exercise-based MI phone calls were made over a 10-week period. Assessments were done at baseline, week 12 (immediate postintervention) and week 30 (follow-up). The primary endpoints were changes from baseline in the fibromyalgia impact questionnaire (FIQ)-pain and physical impairment at week 30. Secondary measures were brief pain inventory (BPI)-pain severity and BPI-pain interference, the number of exercise minutes (NEM) per week, and the arthritis impact measurement scale (AIMS)-depression. The 19 enrolled female participants had a mean age of 52.2 +/- 9.1 years, mean disease duration of 7.5 +/- 5.0 years, and a mean FIQ-pain score of 7.7 +/- 1.4. By week 30, there was significant improvement in both FIQ-pain (-2.6 +/- 2.6, p < 0.001) and FIQ-physical impairment (-1.3 +/- 2.1, p = 0.01). Likewise, BPI-pain severity and pain interference were reduced by -2.4 +/- 2.1 (p < 0.001) and -2.4 +/- 2.0 (p < 0.001), respectively. While the median NEM per week increased from 0 to 32 min (p = 0.001) at week 30, AIMS-depression score was unchanged. In this pilot study, we conclude that telephone-delivered MI to promote exercise was associated with an improvement in patient's level of pain and physical impairment.

The purpose of this study was to assess the effectiveness of Stanger bath on the treatment of fibromyalgia (FM). Fifty women with FM were randomly divided into two groups. The first group (n=25) was treated with amitriptyline, 10 mg/day for 8 weeks, and Stanger bath, 20 min daily for ten sessions. The second group (n=25) only had amitriptyline, 10 mg/day for 8 weeks. In the first group the assessment parameters were measured before (t1), at the end (t2), and 2 months after the hydrotherapy (t3). In the second group these parameters were examined before (T1) and 2 months after the treatment (T2). Patients were evaluated by number of tender points and Fibromyalgia Impact Questionnaire (FIQ) scores. There was significant improvement in number of tender points between t1 and t2 (P<0.01) and t1 and t3 (P<0.001) in the Stanger bath group. In addition, there was significant improvement in FIQ scores between t1 and t2 (P<0.001) and t1 and t3 (P<0.01) in the Stanger bath group. In the second group we observed significant improvement in FIQ scores and tender point numbers between T1 and T2 (P=0.00). We did not find any difference between groups in tender point number percent change (p=0.074). However, we observed statistically significant improvement in percent change of FIQ scores in Stanger bath group (-30+/-16.7) when compared to group 2 (-19.3+/-13) (p=0.016). We conclude that Stanger bath therapy when combined with amitriptyline has a long lasting effect and better outcome in FM patients.

The goal of our study was to determine the efficacy of Farabloc, an electromagnetic shielding fabric compared to placebo fabric when worn as a nightgown, as an analgesic in patients hospitalized with fibromyalgia. In a rheumatologic and rehabilitation hospital, we performed a phase 1, single-blind study of patients using Farabloc (F) or placebo (P) gowns for 8 h per night during the 20-day hospitalization and a phase 2, single-blind crossover study of patients using both F and P gowns randomly and alternatively switching after 10 of 21 days hospitalization (phase 1: 42 F, mean age 49.02 years, 35 female, 7 male; 84 P, mean age 48.08 years, 72 female, 12 males; phase 2: 25 F/P, P/F, or P/P, mean age 44.0 years, 24 female, 1 male). The study involved randomly selected and blinded use of hospital gown 8 h per night of either F or P fabric. The main outcome measures were changes from admission or midpoint to discharge in quantity of pain (QN), quality of pain (QL), and paracetamol use (PU). In phase 1, all three variables significantly favored F over P when using paired t test, two sample t test, Mann-Whitney, and analysis of covariance tests. QN was reduced (F = -2.03 -/+ 0.99*, P = 0.59 -/+ 0.71). QL was reduced (F = -10.64 -/+ 5.69*, P = -2.54 -/+ 3.40). PU was reduced (F = 10.69 -/+ 6.68*, P = 26.12 -/+ 9.37). In phase 2, comparing midpoint to discharge levels in the three variables again favored P/F over F/P and P/P (>0.001): QN (P/F +16.00 -/+ 8.35* F/P -13.27 -/+ 11.40), QL (P/F +8.71 -/+ 4.75* F/P -6.55 -/+ 5.59), and PU (F -9.29 -/+ 4.39* P -18.00 -/+ 5.27) (*p = <0.001). Patients with fibromyalgia had less pain after sleeping in a gown made of Farabloc than with a placebo fabric. This suggests that Farabloc, an electromagnetic shielding fabric, has analgesic properties in fibromyalgia. Reduced pain observation is consistent with previous studies in phantom limb pain and delayed onset muscle pain. Limitations of this study include single blind design, small sample size, and in phase 2, a lack of washout period and a F/F group.

Objectives: Action potential simulation (APS) is becoming a popular method of pain reduction. Nevertheless, little is known about the efficacy of this relatively new treatment. The aim of this study was to investigate whether APS helps to reduce pain, improves patients' perception of daily functioning and social participation in patients with fibromyalgia syndrome (FMS)., Materials and Methods: Ten patients with FMS according to the American College of Rheumatology (ACR) criteria entered this double blind crossover single-case study. In a period of 20 weeks, the patients underwent two treatment periods of 4 weeks, one with verum and one with placebo, at random, in a double blind fashion. Outcome measures were evaluated on a weekly basis. Primary outcome measure was pain measured with the Fibromyalgia Impact Questionnaire (FIQ) questions 4 and 5, the number of tender points and the total tender point pain intensity score. Both visual inspection and statistical analysis were done to analyse the data from this single-subject design., Results: Performing visual inspection and statistical analysis, no positive results of the APS treatment were found in this study. Remarkable is the fact that placebo APS had significantly better results than verum APS., Conclusions: In this single-case study with ten patients (all female), APS was not a helpful method to reduce pain, to improve patients' perception of daily functioning and social participation in patients with FMS.

Fibromyalgia (FS) is an idiopathic chronic pain syndrome defined by widespread non-articular musculoskeletal pain and generalised tender points. As there is no effective treatment, patients with this condition have impaired quality of life (QoL). The aim of this study was to assess the possible effect of balneotherapy at the Dead Sea area on the QoL of patients with FS. Forty-eight subjects participated in the study; half of them received balneotherapy, and half did not. Their QoL (using SF-36), psychological well-being and FS-related symptoms were assessed prior to arrival at the spa hotel in the Dead Sea area, at the end of the 10-day stay, and 1 and 3 months later. A significant improvement was reported on most subscales of the SF-36 and on most symptoms. The improvement in physical aspects of QoL lasted usually 3 months, but on psychological measures the improvement was shorter. Subjects in the balneotherapy group reported higher and longer-lasting improvement than subjects in the control group. In conclusion, staying at the Dead Sea spa, in addition to balneotherapy, can transiently improve the QoL of patients with FS. Other studies with longer follow-up are needed to support our findings.

Twenty patients with fibromyalgia syndrome (FMS) and 20 matched healthy controls were subjected to an exercise stress test above their anaerobic threshold. Serum samples for the measurement of growth hormone (GH), insulin-like growth factor-1 (IGF-1), prolactin (PRL), adrenocorticotrophic hormone (ACTH) and cortisol were taken prior to and after the test at 30-min intervals. Compared to the controls, the patients with FMS displayed significantly lower basal GH levels and slightly, though significantly, higher prolactin levels. Following the exercise test there was a significant increase in the mean GH level in the patient group (P = 0.0474) and a significant decrease in the control group (P = 0.0286) 1 hour after the exercise. A slight decrease in ACTH levels in the control group was observed (P = 0.0002), but there was no significant change in FMS patients. Cortisol levels were significantly lower in both groups after the exercise (P = 0.0001). These results suggest the possibility of a perturbation in hormonal response to exercise in patients with FMS.

Fibromyalgia (FM) is a disorder characterised by diffuse widespread musculoskeletal aching and stiffness and multiple tender points [1]. Its pathophysiology is poorly understood. The influence of aerobic endurance exercise on pain in patients with FM was investigated. Twenty-seven patients (25 female, 2 male) participated in a controlled clinical study and performed 12 weeks of jogging, walking, cycling or swimming following a given schedule. Twelve sedentary FM patients (11 female, 1 male) served as controls. Before and after training both the study and the control groups were evaluated spiroergometrically. Tender point pain was quantified by dolorimetry. The painful body surface was estimated by a pain body diagram, and its intensity by a visual analogue scale and a ranking scale. Patients trained for an average of 25 min two to three times a week, with an average intensity of 50% of maximal oxygen uptake (VO2max). Unlike the control group, the training group exhibited a decrease in heart rate and VO2 and an increase in respiratory quotient during submaximal workload. Maximal performance capacity and VO2max remained unchanged, whereas the wattpulse (watt/heart rate) improved at maximal workload. Pain parameters remained unchanged in the control group, but in the training group the mean number of positive tender points (15.4/12.7), the mean pain threshold of the gluteal tender point (2.89 kp/3.50 kp) and the painful body surface (18%/15% body surface) decreased significantly. Subjective general pain condition deteriorated in two patients but improved in 17. Our results suggest a positive effect of aerobic endurance exercise on fitness and well-being in patients with FM.

This study examined the factors influencing the use of complementary therapies in patients with fibromyalgia. A postal questionnaire was sent to 90 patients who had attended a rheumatology out-patient clinic in West Yorkshire for their diagnosis or treatment of fibromyalgia. Seventy-one percent of fibromyalgia patients had used or were using complementary therapies. Patients who were using complementary therapies were of a higher socio-economic group (p < 0.001). The most popular therapy was oral supplementation. The duration of complementary therapies ranged from 3 months to 26 years (median = 3). The number of therapies used by each patient ranged from 1 to 10 (median = 3). The duration of fibromyalgia was associated with both the duration of complementary therapies (p < 0.001) and the number of therapies used (p < 0.05). The most popular source of advice for the decision to use complementary therapies was from a magazine (40%). Patients using complementary therapies were less likely to be satisfied with their current hospital treatment and turned to complementary therapies in the chance of relief from their fibromyalgia. The relatively high cost and lack of information on complementary therapies appeared to dissuade those patients who chose not to use it.

In the present study, two established non-medicinal treatment methods are compared with regard to their effect on various psychological pain parameters in patients with fibromyalgia. Twelve patients underwent hydrogalvanic baths, 13 patients the Jacobson relaxation training. Statistical evaluation showed only one significant difference in the different dimensions of pain measured at the beginning and end of the therapy. In comparison with patients receiving Jacobson-therapy, there is a significantly higher decrease in pain intensity in the period from breakfast till lunch in patients receiving bath-therapy. Apart from this, no differences between the two treatment groups could be found, either in the quality of pain, the psychological symptoms accompanying it, in sleep quality or in pain behaviour.

Although the aetiology of fibromyalgia is still unexplained, evidence favouring the role of psychopathology is accumulating, at least in a subgroup of patients; however, the exact aetiological significance of psychopathology in this syndrome is difficult to assess. Various assessment strategies have both strengths and weaknesses. Two case reports are presented which illustrate the value of the psychiatric in-depth interview (including psychodynamic-biographical history taking) for assessing and understanding psychological/psychiatric aspects of fibromyalgia.