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Jiao J, Cheng ZY, Xiao YY, Wang H, Zhang YF, Zhao YY, Jia Y. Validation of the 2011 and 2016 American college of rheumatology diagnostic criteria for fibromyalgia in a Chinese population. Ann Med 2023; 55:2249921. [PMID: 37634058 PMCID: PMC10461495 DOI: 10.1080/07853890.2023.2249921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 08/28/2023] Open
Abstract
PURPOSE To provide a foundation for clinical diagnosis, epidemiological investigation and intervention trials, we examined the reliability and validity of the American College of Rheumatology (ACR) 2011 and 2016 survey diagnostic criteria among Chinese patients based on the fibromyalgia severity (FS) scale. METHODS In this study, 200 fibromyalgia patients diagnosed according to the 1990 criteria (1990c) were matched with rheumatoid arthritis (RA) patients based on age and gender. The FS scale score and its subscales were examined to determine their correlations with the revised fibromyalgia impact questionnaire (FIQR). Receiver operator characteristic (ROC) analysis was performed, and test-retest reliability, internal consistency, and construct validity were examined. RESULTS The area under the curve (AUC) for the ACR 2011c and 2016c was 0.870 and 0.845, respectively, and the sensitivity and specificity were 78.0% and 96.0% for the 2011c and 70.5% and 98.5% for the 2016c, respectively. The FS scale and its subscales were confirmed to exhibit good internal consistency, and they were significantly correlated with the FIQR, thereby indicating adequate construct validity. Using a lower cutoff value 11 points for the FS scale score based on the generalized pain requirement might be a more effective approach in the Chinese population; this approach yielded an AUC of 0.923 and a sensitivity of 87.0% and specificity of 97.5%. CONCLUSION The 2011c and 2016c are reliable instruments for diagnosing fibromyalgia patients in China. The FS scale could be a valid tool to assist in fibromyalgia diagnosis, and a cutoff value 11 points is more suitable in Chinese patients. TRIAL REGISTRATION ClinicalTrials.gov ID: NCT03381131.
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Ghiggia A, Bottiroli S, Lingiardi V, Tassorelli C, Galli F, Castelli L. Alexithymia and psychological distress in fibromyalgia and chronic migraine: A cross-sectional study. J Psychosom Res 2022; 163:111048. [PMID: 36228434 DOI: 10.1016/j.jpsychores.2022.111048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 09/01/2022] [Accepted: 09/24/2022] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Several studies have shown a strong association between alexithymia and psychological distress in both healthy and clinical populations. The aim of this study was to investigate the prevalence and association between alexithymia and psychological distress in individuals with fibromyalgia (FM) and chronic migraine (CM) compared with healthy controls (HC). METHODS A cross-sectional study was conducted. Two hundred fifty women with FM (age: 51.2 ± 10.5) and 250 women with CM (age: 46.1 ± 11.5) were assessed with the Toronto Alexithymia Scale (TAS-20) and the Hospital Anxiety and Depression Scale (HADS) and compared with HCs (n = 280; age: 51.8 ± 9.0) by one-way analyses of variance. A moderation analysis was performed to examine the moderation effect of groups on the relationship between alexithymia and psychological distress. RESULTS Differences between groups showed significantly higher scores for TAS-20 [F(2,755) = 11.7, p < .001] and HADS [F(2,763) = 31.7, p < .001] in FM, compared with CM and HCs. The moderation analysis showed that both clinical groups and TAS-20 (β = 0.20, p < .001) were significant predictors, as well as the interaction terms. The slope of the correlation curve was more pronounced in the patient groups, indicating that the degree of alexithymia had a significantly higher influence on the HADS total score in the patient groups. CONCLUSION The results suggest a common psychological dysregulation in FM and CM, with a slight but greater prevalence of alexithymia and psychological distress in FM. These data suggest that although there is a similar psychological substrate, it is expressed in a different expression of somatic symptoms.
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Gardoki-Souto I, Redolar-Ripoll D, Fontana M, Hogg B, Castro MJ, Blanch JM, Ojeda F, Solanes A, Radua J, Valiente-Gómez A, Cirici R, Pérez V, Amann BL, Moreno-Alcázar A. Prevalence and Characterization of Psychological Trauma in Patients with Fibromyalgia: A Cross-Sectional Study. Pain Res Manag 2022; 2022:2114451. [PMID: 36504759 PMCID: PMC9729049 DOI: 10.1155/2022/2114451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 09/22/2022] [Accepted: 10/26/2022] [Indexed: 12/05/2022]
Abstract
Background Preliminary evidence suggests that psychological trauma, especially childhood trauma, is a risk factor for the onset of fibromyalgia (FM). Objective The main objective of this study consisted of evaluating the prevalence and detailed characteristics of psychological trauma in a sample of patients with FM, the chronology of trauma across the lifespan, and its clinical symptoms. We also calculated whether childhood trauma could predict the relationship with different clinical variables. Method Eighty-eight females underwent an interview to assess sociodemographic data, psychiatric comorbidities, level of pain, FM impact, clinical symptoms of anxiety, depression, insomnia, quality of life, and psychological trauma. Results The majority of participants (71.5%) met the diagnostic criteria for current post-traumatic stress disorder (PTSD). Participants reported having suffered traumatic events throughout their lifespan, especially in childhood and early adolescence, in the form of emotional abuse, emotional neglect, sexual abuse, and physical abuse. Traumatic events predict both poor quality of life and a level of pain in adulthood. All patients showed clinically relevant levels of anxiety, depression, insomnia, suicidal thoughts, and pain, as well as somatic comorbidities and poor quality of life. Pain levels predicted anxiety, depression, dissociation, and insomnia symptoms. 84% of the sample suffered one or more traumatic events prior to the onset of pain. Conclusions Our data highlight the clinical complexity of patients with FM and the role of childhood trauma in the onset and maintenance of FM, as well as the high comorbidity between anxiety, depression, somatic symptoms, and FM. Our data also supports FM patients experiencing further retraumatization as they age, with an extremely high prevalence of current PTSD in our sample. These findings underscore the need for multidisciplinary programs for FM patients to address their physical pain and their psychiatric and somatic conditions, pay special attention to the assessment of psychological trauma, and provide trauma-focused interventions. Trial registration: ClinicalTrials.gov NCT04476316. Registered on July 20th, 2020.
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Joustra ML, Hartman CA, Bakker SJL, Rosmalen JGM. Cognitive Task Performance and Subjective Cognitive Symptoms in Individuals With Chronic Fatigue Syndrome or Fibromyalgia: A Cross-Sectional Analysis of the Lifelines Cohort Study. Psychosom Med 2022; 84:1087-1095. [PMID: 35980775 DOI: 10.1097/psy.0000000000001117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE This study examined cognitive task performance and self-reported cognitive functioning in individuals with chronic fatigue syndrome (CFS) and fibromyalgia (FM) in a population-based sample and investigated the role of mood and anxiety disorders as well as severity of the physical symptoms. METHODS This study was performed in 79,966 participants (mean [standard deviation] age = 52.9 [12.6] years, 59.2% women) from the Lifelines general population. Symptoms consistent with the diagnostic criteria for CFS and FM were assessed using questionnaires. Two comparison groups were used: participants with self-reported medical disorders with well-defined pathophysiology (i.e., multiple sclerosis and rheumatic arthritis) and controls without these diseases. Objective task performance was based on the computerized CogState cognitive battery and subjective cognitive symptoms using the concentration subscale of the Checklist Individual Strength. RESULTS Cognitive task performance was poorer in individuals with CFS versus controls without disease and controls with a medical disorder, although the severity of cognitive dysfunction was mild. Participants meeting the criteria for CFS ( n = 2461) or FM ( n = 4295) reported more subjective cognitive symptoms compared with controls without a medical disorder ( d = 1.53, 95% confidence interval [CI] = 1.49-1.57 for CFS; d = 1.25, 95% CI = 1.22-1.29 for FM) and participants with a medical disease ( d = 0.62, 95% CI = 0.46-0.79 for CFS; d = 0.75, 95% CI = 0.70-0.80 for FM). These differences remained essentially the same when excluding participants with comorbid mood or anxiety disorders or adjusting for physical symptom severity. CONCLUSIONS Subjective cognitive symptoms and, to a lesser extent, suboptimal cognitive task performance are more prevalent in individuals with CFS or FM compared with controls without these conditions.
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Lichtenstein A, Tiosano S, Comaneshter DD, Cohen A, Amital H. A case-control analysis of the associations between Fibromyalgia Syndrome and Osteoporosis. THE ISRAEL MEDICAL ASSOCIATION JOURNAL : IMAJ 2022; 24:737-740. [PMID: 36436041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND Fibromyalgia syndrome (FMS) is characterized by widespread musculoskeletal pain and tenderness with associated neuropsychological symptoms such as fatigue, unrefreshing sleep, cognitive dysfunction, anxiety, and depression. Osteoporosis is defined as a reduction of bone density. Previous studies to determine an association of FMS with osteoporosis showed mixed results, partially due to small sample sizes and lack of statistical power. OBJECTIVES To evaluate the association of FMS with osteoporosis. METHODS We conducted a case-control study utilizing the database from Israel's largest health maintenance organization. FMS patients were compared to age- and sex-matched controls. Data were analyzed using chi-square and t-tests. Multivariable logistic regression models assessed the association between osteoporosis and FMS. Spearman's rho test was used for correlation. RESULTS We utilized data from 14,296 FMS patients and 71,324 age- and sex-matched controls. Spearman's rho test showed a significant correlation between FMS and osteoporosis (correlation coefficient 0.55, P < 0.001). A logistic regression for osteoporosis showed an odds ratio [OR] of 1.94 (95% confidence interval [95%CI] 1.83-2.06, P < 0.001) for FMS compared to controls and found higher body mass index to be slight protective (OR 0.926, 95%CI 0.92-0.93, P < 0.001). CONCLUSIONS There is a significant correlation between FMS and osteoporosis. Early detection of predisposing factors for osteoporosis in FMS patients and implementation of suitable treatments and prevention measures (such as dietary supplements, resistance or weight bearing exercise, and bone-mineral enhancing pharmacological therapy) may reduce both occurrence rate and severity of osteoporosis and its complications, such as fractures.
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Berwick R, Barker C, Goebel A, On Behalf Of The Guideline Development Group. The diagnosis of fibromyalgia syndrome. Clin Med (Lond) 2022; 22:570-574. [PMID: 38589162 PMCID: PMC9761415 DOI: 10.7861/clinmed.2022-0402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Fibromyalgia syndrome (FMS) is a common widespread primary pain condition, with a worldwide prevalence of 2%-4%. Recent research has revealed important evidence for changes in central and peripheral nervous system functions and immunological activity. The diagnosis of FMS can be challenging with no known clinical laboratory investigations to confirm or refute its presence. Symptoms are commonly multiple, fluctuant and may not easily align with established medical diagnostic categories. It can be difficult for patients to articulate their array of symptoms, and for both patients and healthcare professionals to fully make sense of the complexities of the condition. As such, patients may be diagnosed inaccurately with alternative conditions, delaying diagnosis by years. The recent publication of the Royal College of Physicians' guidance aims to support clinicians in the diagnosis of FMS. Its purpose is to provide succinct, relevant information for patients and clinicians about FMS and its diagnosis.
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Espinoza MA, Bilbeny N, Abbott T, Carcamo C, Zitko P, Zamorano P, Balmaceda C. Cost analysis of chronic pain due to musculoskeletal disorders in Chile. PLoS One 2022; 17:e0273667. [PMID: 36301984 PMCID: PMC9612497 DOI: 10.1371/journal.pone.0273667] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 08/14/2022] [Indexed: 11/07/2022] Open
Abstract
The magnitude of the cost of chronic pain has been a matter of concern in many countries worldwide. The high prevalence, the cost it implies for the health system, productivity, and absenteeism need to be addressed urgently. Studies have begun describing this problem in Chile, but there is still a debt in highlighting its importance and urgency on contributing to chronic pain financial coverage. This study objective is to estimate the expected cost of chronic pain and its related musculoskeletal diseases in the Chilean adult population. We conducted a mathematical decision model exercise, Markov Model, to estimate costs and consequences. Patients were classified into severe, moderate, and mild pain groups, restricted to five diseases: knee osteoarthritis, hip osteoarthritis, lower back pain, shoulder pain, and fibromyalgia. Data analysis considered a set of transition probabilities to estimate the total cost, sick leave payment, and productivity losses. Results show that the total annual cost for chronic pain in Chile is USD 943,413,490, corresponding an 80% to the five diseases studied. The highest costs are related to therapeutic management, followed by productivity losses and sick leave days. Low back pain and fibromyalgia are both the costlier chronic pain-related musculoskeletal diseases. We can conclude that the magnitude of the cost in our country's approach to chronic pain is related to increased productivity losses and sick leave payments. Incorporating actions to ensure access and financial coverage and new care strategies that reorganize care delivery to more integrated and comprehensive care could potentially impact costs in both patients and the health system. Finally, the impact of the COVID-19 pandemic will probably deepen even more this problem.
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McCoy SS, Hetzel S, VanWormer JJ, Bartels CM. Sex hormones, body mass index, and related comorbidities associated with developing Sjögren's disease: a nested case-control study. Clin Rheumatol 2022; 41:3065-3074. [PMID: 35701626 PMCID: PMC9610811 DOI: 10.1007/s10067-022-06226-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/20/2022] [Accepted: 05/24/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Sjögren's disease (SjD), a highly female predominant systemic autoimmune disease, peaks in perimenopause. Prior studies lack details on timing or type of sex hormone exposure. We examined SjD risk using endogenous and exogenous hormone exposure and related comorbidities. METHODS We performed a retrospective case-control study of adult women, nested within a population cohort. Cases had SjD diagnosed by a rheumatology provider or two SjD diagnoses from a non-rheumatology provider with a positive anti-SSA antibody or salivary gland biopsy. Cases were age-matched to three SjD-free controls. We calculated modified composite estrogen scores (mCES) and collected demographics, comorbidities, and endogenous and exogenous hormone exposures. Risk ratios were adjusted for demographics. RESULTS Of 546 SjD cases and 1637 age-matched controls, mCES was not significantly associated with SjD in adjusted models. The top individual hormone exposures associated with SjD included estrogen replacement therapy (ERT; RR 1.78 [95% CI 1.47-2.14]), polycystic ovarian syndrome (1.65 [1.28-2.12]), and hysterectomy without bilateral oophorectomy (1.51 [1.13-2.03]). We identified comorbidities preceding SjD including fibromyalgia, pulmonary disease, diabetes, lymphoma, osteoporosis, peripheral vascular disease, and renal disease. Taking comorbidities into account, we developed a predictive model for SjD that included fibromyalgia (2.50 [1.93-3.25]), osteoporosis (1.84 [1.27-2.66]), hormone replacement therapy (HRT) (1.61 [1.22-2.12]), diabetes (0.27 [0.13-0.50]), and body mass index (BMI) (0.97 [0.95-0.99]). CONCLUSIONS We report a novel algorithm to improve identifying patients at risk for SjD and describe sex hormone association with SjD. Finally, we report new comorbidities associated with SjD decrease, BMI and diabetes, and increase, lymphoma and osteoporosis.. Key Points •Given female predominance and typical perimenopausal onset, sex hormones should be considered when studying comorbidities in Sjögren's disease. •The top exposures associated with developing Sjögren's disease included fibromyalgia, osteoporosis, and use of hormone replacement therapy. Possible protective factors included prior diabetes and higher body mass index. •We used our newly identified exposures to generate a predictive algorithm, which has potential to improve diagnosis and pathogenic insights into Sjögren's disease.
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Andre G, Petitjean P, Haas V, Geraud E, Fantini ML, Creac'h C, Perez C, Bonnefoi M, Gadea E. Screening and management of sleep disorders in patients with fibromyalgia syndrome: a French multicentred, prospective, observational study protocol (FIBOBS). BMJ Open 2022; 12:e062549. [PMID: 36180114 PMCID: PMC9528680 DOI: 10.1136/bmjopen-2022-062549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Sleep disorders are still often underestimated in patient care management even though they are present in the criteria of the American College of Rheumatology for the diagnosis of fibromyalgia syndrome (FMS). The objective of this study will be to assess the current situation of sleep disorders in patients with FMS in France and to estimate its prevalence. METHODS AND ANALYSIS The FIBOBS study is a multicentred, prospective, observational trial performed by 46 specialised chronic pain structures in France. Patients with FMS visiting for a first consultation or follow-up (if they have already been followed up for less than a year with a pain management service) will be included after giving their informed consent. Data will be collected through the physician questionnaire filled during the inclusion visit. Patient self-questionnaires will be completed from home. The primary outcome of the study will be to estimate the prevalence of sleep disorders classified into three categories: (a) poor sleep quality in general, (b) sleep apnoea syndrome and (c) restless legs syndrome, using self-administered questionnaires. ETHICS AND DISSEMINATION This protocol is approved by the ethics committee Comité de Protection des Personnes 'Ile de France II' in accordance with French regulations. The results will be disseminated through peer-reviewed journals and conferences. TRIAL REGISTRATION NUMBER NCT04775368.
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Navarro-Ledesma S, Pruimboom L, Lluch E, Dueñas L, Mena-Del Horno S, Gonzalez-Muñoz A. The Relationship between Daily Physical Activity, Psychological Factors, and Vegetative Symptoms in Women with Fibromyalgia: A Cross-Sectional Observational Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191811610. [PMID: 36141882 PMCID: PMC9517117 DOI: 10.3390/ijerph191811610] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 05/27/2023]
Abstract
Nowadays, there is evidence that relates the amount of physical activity, as well as the impact of psychological factors, to the intensity of symptoms present in patients with fibromyalgia (FM). However, there are no studies which correlate the level of association of physical activity, psychological factors and vegetative symptoms in the FM population. The study has a cross-sectional observational design with 41 participants being recruited from a private clinic and rehabilitation service. The Autonomic Symptom Profile (Compass-31) to assess vegetative symptoms, the GODIN questionnaire to evaluate the level of leisure activity, and the pain catastrophizing scale, Tampa Kinesiophobia Scale and Self-Efficacy Scale to assess psychological factors, were used. A low and significant level of association was found between pain catastrophizing (PCS) and Kinesiophobia (r = 0.398; p < 0.01), as well as with catastrophizing and vegetative symptoms (r = 0.428; p < 0.05). Furthermore, a low and significant level of association was also found between self-efficacy and vegetative symptoms (r = 0.397; p < 0.05). No association was found between the level of daily physical activity (measured by the Godin Leisure questionnaire) and vegetative symptoms, nor with any psychological factor studied. There is an association between vegetative symptoms and psychological factors. Nevertheless, more research which takes other factors into account, such as lifestyle and nutritional, is needed.
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Felson D, Feathers V, Naik C, Solomon DH, Weinblatt ME, Shadick N. Meaning of patient global assessment when joint counts are low in rheumatoid arthritis. RMD Open 2022; 8:e002346. [PMID: 35738804 PMCID: PMC9226990 DOI: 10.1136/rmdopen-2022-002346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 06/10/2022] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE In patients with rheumatoid arthritis (RA) with low 28-joint tender and swollen joint counts but who assessed their disease as active, to evaluate whether activity reflected RA symptoms. METHODS We carried out a cross-sectional study of patients in BRASS, a cohort of patients with established RA who had 28-joint counts assessed, scored their disease activity, identified their painful joints, and answered questions about other sites of pain and fatigue. Patients and their rheumatologists were asked about the presence of fibromyalgia. We examined whether patients reported pain in joints excluded from the 28-joint joint count (feet, ankles, hips, neck) and pain or symptoms probably unrelated to RA including low back pain, headache and fibromyalgia. Fatigue was not classified. Analyses were descriptive. RESULTS Of 272 patients, 49 had tender and swollen joint counts <1 and a patient global assessment score of ≥3/10. 48/49 (95%) reported pain in joints excluded from the 28-joint count. Of these 49, 24 (45%) also had other symptoms especially low back pain. Fatigue was present in all patients. No patient had fibromyalgia. CONCLUSION If joint counts <=1 are scored in 28 joints, patient global assessments of ≥3/10 often occur when there is pain in uncounted joints, joints that may respond to RA treatment.
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Hunskar GS, Rortveit G, Litleskare S, Eide GE, Hanevik K, Langeland N, Wensaas KA. Prevalence of fibromyalgia 10 years after infection with Giardia lamblia: a controlled prospective cohort study. Scand J Pain 2022; 22:348-355. [PMID: 34679267 DOI: 10.1515/sjpain-2021-0122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/21/2021] [Indexed: 12/12/2022]
Abstract
OBJECTIVES To investigate whether acute infection with Giardia lamblia is associated with fibromyalgia 10 years after infection and whether fibromyalgia is associated with irritable bowel syndrome (IBS) and chronic fatigue (CF) in this setting. METHODS A cohort study was established after an outbreak of G. lamblia in Bergen, Norway, 2004. Laboratory-confirmed cases and a matched control group were followed for 10 years. The main outcome was fibromyalgia 10 years after giardiasis, defined by the 2016 revisions of the fibromyalgia diagnostic criteria using the Fibromyalgia Survey Questionnaire (FSQ). RESULTS The prevalence of fibromyalgia was 8.6% (49/572) among Giardia exposed compared to 3.1% (21/673) in controls (p<0.001). Unadjusted odds for having fibromyalgia was higher for Giardia exposed compared to controls (odds ratio (OR): 2.91, 95% confidence interval (CI): 1.72, 4.91), but adjusted for IBS and CF it was not (OR: 1.05, 95% CI: 0.57, 1.95). Among participants without CF the odds for fibromyalgia was 6.27 times higher for participants with IBS than those without (95% CI: 3.31, 11.91) regardless of exposure. Among participants without IBS the odds for fibromyalgia was 4.80 times higher for those with CF than those without (95% CI: 2.75, 8.37). CONCLUSIONS We found a higher prevalence of fibromyalgia among Giardia exposed compared to controls 10 years after the acute infection. Fibromyalgia was strongly associated with IBS and CF, and the difference between the exposed and controls can be attributed to the high prevalence of IBS and CF among the Giardia exposed. Notably, this study was not designed to establish causality between Giardia exposure and the outcomes.
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Guerin C, Attli B, Cooley K, Hassan S, Sarebanha S, Sadrolsadot P, Chung C. An Assessment of Naturopathic Treatments, Health Concerns, and Common Comorbid Conditions in Fibromyalgia Patients: A Retrospective Medical Record Review. JOURNAL OF INTEGRATIVE AND COMPLEMENTARY MEDICINE 2022; 28:363-372. [PMID: 35100049 DOI: 10.1089/jicm.2021.0231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Background: Fibromyalgia (FM) is characterized by chronic pain, with allodynia and hyperalgesia being the most common signs. Many patients with FM explore, express interest, and use complementary and alternative medicine to help manage symptoms and improve quality of life. However, little is known about the clinical recommendations provided by naturopathic doctors (NDs). Objective: To describe trends in assessment and treatment of patients with FM by NDs. Methods: Retrospectively, medical records of 200 patients with the FM ICD-10 code were reviewed from the Robert Schad Naturopathic Clinic. Of these records, 70 met inclusion criteria and were further analyzed. Comorbid conditions, health concerns, physical and psychological examinations, and treatment were recorded. Patients were excluded if informed consent for research was not signed. The project was approved by the Research Ethics Board of the Canadian College of Naturopathic Medicine. Results: Seventy patients met criteria and were included in the current analysis. Most patients identified as female (96%). Vitamin D (57%), magnesium (54%), omega-3 fish oil (53%), acupuncture by an acupuncturist (53%) or an ND (40%), B12 orally or by injection (40%), and probiotics (40%) were highly utilized treatments. A past/current medical history of digestive complaints (64%) and depression/mental illness (63%) were common comorbidities, alongside a history of arthritic conditions (53%) and anxiety (43%). A family history of arthritic conditions (47%) was also prevalent. The Widespread Pain Index and Symptom Severity tool (43%) was used to assess pain and other symptoms. No adverse effects of treatment were readily identifiable. Conclusion: Findings from this study reveal elements of both consistency and variability in the treatment recommendations from NDs in a teaching clinic environment. Future research that assesses or compares treatment recommendations for FM in other settings may be informative to better understand health services, the nature of individualized care, and patient experiences.
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Ming Azevedo P, Prétat T, Hügle T. [Assessment of secondary fibromyalgia in patients with rheumatoid arthritis or spondylarthritis]. REVUE MEDICALE SUISSE 2022; 18:477-481. [PMID: 35306768 DOI: 10.53738/revmed.2022.18.773.477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pain is one of the main factors assessed in most of the scores used to measure activity in rheumatoid arthritis (RA) and spondylo arthritis (SpA). However, the experience of pain is complex, subjective and influenced by many factors. Fibromyalgia (FM) is present in 16-38% of patients with inflammatory rheumatic diseases (IRD) and has been shown to significantly increase indices of disease activity, often preventing an adequate response to immunosuppressive treatments. Recognition of secondary FM is important to avoid overtreatment. This article explores the relationship between FM and IRD, and how to optimise the assessment and treatment of one in the presence of the other.
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Singh JA. Epidemiology and Outcomes of Alcohol Use Hospitalizations in People With Gout, Rheumatoid Arthritis, Fibromyalgia, Osteoarthritis, or Low Back Pain: A National US Study. J Clin Rheumatol 2022; 28:e375-e380. [PMID: 33843780 DOI: 10.1097/rhu.0000000000001731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To examine the incidence, time trends, and outcomes of alcohol use disorder (AUD) hospitalizations in people with gout, rheumatoid arthritis (RA), fibromyalgia, osteoarthritis, or low back pain (LBP). METHODS We used the US National Inpatient Sample data from 1998 to 2016. We examined the rates of AUD hospitalizations in musculoskeletal diseases (MSDs), based on the presence of diagnostic codes for AUD in the primary and MSDs in a secondary position. Multivariable-adjusted (age, sex, race, and income) health care utilization and in-hospital mortality were compared by the presence/absence of MSDs, using linear or logistic regression. RESULTS Alcohol use disorder hospitalizations increased over the 19-year study period from 1998 to 2014 to 3-fold higher in gout, osteoarthritis, or LBP; 3.5-fold in RA; and 4.5-fold in fibromyalgia. Compared with AUD hospitalizations in people without each respective MSD, adjusted total hospital charges were $3913 higher in people with gout and $1368 to $1614 lower for osteoarthritis, fibromyalgia, or LBP over the study period (all significant) and not significantly different for RA. The adjusted odds of hospital stay of more than 3 days were significantly higher for all 5 MSDs, with odds ratio ranging 1.10 for LBP to 1.34 for gout. The adjusted odds of in-hospital mortality were significantly lower for all 5 MSDs, with odds ratio ranging from 0.21 for fibromyalgia to 0.50 for gout. CONCLUSIONS In a national US study, the rate of AUD hospitalizations increased in all 5 MSDs. Providers and patients with MSDs should be counseled regarding the risk and impact of alcohol use. Interventions to reduce AUD hospitalization-associated health care burden in MSD are needed.
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Kleykamp BA, Ferguson MC, McNicol E, Bixho I, Arnold LM, Edwards RR, Fillingim R, Grol-Prokopczyk H, Ohrbach R, Turk DC, Dworkin RH. The prevalence of comorbid chronic pain conditions among patients with temporomandibular disorders: A systematic review. J Am Dent Assoc 2022; 153:241-250.e10. [PMID: 34952681 DOI: 10.1016/j.adaj.2021.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/23/2021] [Accepted: 08/19/2021] [Indexed: 01/26/2023]
Abstract
BACKGROUND This systematic review was designed to evaluate the presence of comorbid conditions among patients with temporomandibular disorders (TMDs). TYPES OF STUDIES REVIEWED The authors reviewed studies that reported the prevalence or incidence of chronic pain conditions or psychiatric disorders (anxiety, mood, personality disorders) among patients with any type of TMD. The authors calculated sample size-weighted prevalence estimates when data were reported in 2 or more studies for the same comorbid condition. RESULTS A total of 9 prevalence studies and no incidence studies were eligible for review; 8 of the studies examined chronic pain comorbidities. Weighted estimates showed high prevalence of pain comorbidities across studies, including current chronic back pain (66%), myofascial syndrome (50%), chronic stomach pain (50%), chronic migraine headache (40%), irritable bowel syndrome (19%), and fibromyalgia (14%). A single study examined psychiatric disorders and found that current depression was the most prevalent disorder identified (17.5%). CONCLUSIONS AND PRACTICAL IMPLICATIONS There is a high prevalence of comorbid chronic pain conditions among patients with TMDs, with more than 50% of patients reporting chronic back pain, myofascial syndrome, and chronic stomach pain. Psychiatric disorders among patients with different types of TMDs were studied less commonly in this pain population. Knowledge of the distribution of these and other comorbid disease conditions among patients with different types of TMDs can help dentists and other health care providers to identify personalized treatment strategies, including the coordination of care across medical specialties.
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Alsaaty M, Younis A. FREQUENCY OF FIBROMYALGIA IN A SAMPLE OF IRAQI PATIENTS IN MOSUL WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE. GEORGIAN MEDICAL NEWS 2022:107-112. [PMID: 35417870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
There is a paucity of data on the occurrence of fibromyalgia (FM) in chronic obstructive pulmonary disease (COPD). The objective of this study was to determine the frequency of fibromyalgia in a group of patients with COPD in Mosul, as well as characterization of the features of COPD patients with concomitant FM. Participants included seventy COPD-patients plus se-venty controls. The "2011 modification of the 2010 American College of Rheumatology's preliminary diagnostic criteria for fibromyalgia" was employed to make the diagnosis of FM. The demographic features and COPD data of the patients were documented. Pulmonary function tests and Chest-X-ray were evaluated for all patients. FM was present in 16 (22.9%) of 70 COPD patients, and only in 4 (5.7%) of the 70 controls, and the difference was significant. FM was found in 58.33% of female COPD patients compared to 15.52% of male COPD patients (p=0.004). There was no statistically significant difference in COPD patients with and without FM in respect to their age or BMI. However, patients with FM tended to have a longer duration of COPD (8.06±2.69 vs. 4.78±2.13, P value < 0.001), and higher scores on the Beck Depression Inventory (BDI) (20.7±9.200 vs. 14.8±7.900, P value=0.0139), and greater COPD severity (P< 0.001). The frequency of FM in patients with COPD was higher than control. FM is more likely to occur in female patients. Patients with comorbid FM and COPD tended to report more depressive symptoms, have longer disease duration, and higher disease severity.
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Ruschak I, Toussaint L, Rosselló L, Aguilar Martín C, Fernández-Sáez J, Montesó-Curto P. Symptomatology of Fibromyalgia Syndrome in Men: A Mixed-Method Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031724. [PMID: 35162747 PMCID: PMC8834813 DOI: 10.3390/ijerph19031724] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 01/28/2022] [Accepted: 01/30/2022] [Indexed: 11/16/2022]
Abstract
Fibromyalgia syndrome (FMS) is characterized by generalized chronic musculoskeletal pain, fatigue, and sleep disturbance, as well as cognitive, somatic, and other symptoms. Most people affected by FMS are women, and studies analyzing this condition in men are scarce. In this study, we discuss the physical and psychological symptoms of FMS in men, analyze the possible side effects of pharmacological therapies, and explore the impact of the illness comparing these results between the different classification groups according to sociodemographic variables (marital status, level of education, employment situation and number of people living at home). We used a sequential exploratory mixed method (MM). Qualitative information was obtained from two focus groups (n = 10). Structured questionnaires were administered to 23 men affected by FMS. The mean age of the participants was 51.7 years (SD = 9.64). The most common drugs used were antidepressants and anxiolytics (86.9%), followed by non-steroidal anti-inflammatory drugs (82.6%) and opioids (60.9%). Current level of pain was high (8.2; SD = 1.1), while perceived health and satisfaction with pharmacological treatments were low (4.6; SD = 2.6 and 3.5; SD = 3.2, respectively). The impact of FMS measured using the Fibromyalgia Impact Questionnaire (FIQ) was very high at 88.7 (SD = 8.2). Six categories related with symptoms and side effects of the medication were observed in the qualitative data: (1) main physical symptoms, (2) mood disorders, (3) insomnia and non-restorative sleep, (4) cognitive disturbance, (5) hypersensitivity, and (6) symptoms secondary to opioids. Pain and fatigue were the symptoms most often mentioned by the participants (70% and 80%, respectively). Other important symptoms were anxiety, depression, and memory and sleep disorders. The consumption of opioids causes further unwanted symptoms such as drowsiness and dependence, which makes it difficult for patients to perform basic everyday activities. We believe it is vitally important to continue investigating this symptomatology in order to improve diagnosis and treatment for these patients.
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Abstract
OBJECTIVES This study aimed to compare the demographic characteristics, disease activity, functional status, and quality of life between patients with axial spondyloarthritis and fibromyalgia and patients with axial spondyloarthritis without fibromyalgia. METHODS We searched MEDLINE via PubMed, Cochrane, Scopus, and Embase databases, from the earliest available indexing date to March 30, 2019, for comparative studies evaluating fibromyalgia in patients with axial spondyloarthritis. Two authors extracted data independently, and all discrepancies were resolved through consensus. RESULTS Seven comparative studies were identified. No statistically significant differences were observed in terms of age, levels of inflammatory markers, and prevalence of extra-articular manifestations such as uveitis, psoriasis, and inflammatory bowel disease between patients with Axial spondyloarthritis fibromyalgia and those without it. Sex ratios (female to male) were approximately 3:2 and 1:3 in patients with and without fibromyalgia, respectively. The ratios concerning human leukocyte antigen B27-positive patients with and without fibromyalgia were 45.1% and 65.6%, respectively. Patients with fibromyalgia had significantly higher Bath Ankylosing Spondylitis Disease Activity Index, Bath Ankylosing Spondylitis Functional Index, and Ankylosing Spondylitis Quality of Life scores. CONCLUSIONS Our meta-analysis showed that patients with Axial spondyloarthritis fibromyalgia had considerably higher pain severity, disease activity, and worse quality of life than patients without fibromyalgia. The sex ratios (female to male) were approximately 3:2 and 1:3, and ratios for human leukocyte antigen B27-positive patients were 45.1% and 65.6% in patients with and without fibromyalgia, respectively. Further well-designed studies are needed to substantiate our results.
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Monden R, Rosmalen JGM, Wardenaar KJ, Creed F. Predictors of new onsets of irritable bowel syndrome, chronic fatigue syndrome and fibromyalgia: the lifelines study. Psychol Med 2022; 52:112-120. [PMID: 32546287 PMCID: PMC8711101 DOI: 10.1017/s0033291720001774] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 05/08/2020] [Accepted: 05/16/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND It has been claimed that functional somatic syndromes share a common etiology. This prospective population-based study assessed whether the same variables predict new onsets of irritable bowel syndrome (IBS), chronic fatigue syndrome (CFS) and fibromyalgia (FM). METHODS The study included 152 180 adults in the Dutch Lifelines study who reported the presence/absence of relevant syndromes at baseline and follow-up. They were screened at baseline for physical and psychological disorders, socio-demographic, psycho-social and behavioral variables. At follow-up (mean 2.4 years) new onsets of each syndrome were identified by self-report. We performed separate analyses for the three syndromes including participants free of the relevant syndrome or its key symptom at baseline. LASSO logistic regressions were applied to identify which of the 102 baseline variables predicted new onsets of each syndrome. RESULTS There were 1595 (1.2%), 296 (0.2%) and 692 (0.5%) new onsets of IBS, CFS, and FM, respectively. LASSO logistic regression selected 26, 7 and 19 predictors for IBS, CFS and FM, respectively. Four predictors were shared by all three syndromes, four predicted IBS and FM and two predicted IBS and CFS but 28 predictors were specific to a single syndrome. CFS was more distinct from IBS and FM, which predicted each other. CONCLUSIONS Syndrome-specific predictors were more common than shared ones and these predictors might form a better starting point to unravel the heterogeneous etiologies of these syndromes than the current approach based on symptom patterns. The close relationship between IBS and FM is striking and requires further research.
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Schroeder HT, Cavalheiro JCA, Martins ETJ, Bock PM. Cross-sectional evaluation of socioeconomic and clinical factors and the impact of fibromyalgia on the quality of life of patients during the COVID-19 pandemic. SAO PAULO MED J 2022; 141:138-145. [PMID: 36102460 PMCID: PMC10005461 DOI: 10.1590/1516-3180.2022.0051.r2119052022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 06/03/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The fibromyalgia impact questionnaire (FIQ) relates to the functional capacity, professional situation, psychological disorders, and physical symptoms, and can identify the factors that determine the impact of the syndrome and characteristics of its carriers; the higher the score, the greater the impact of fibromyalgia on the quality of life. OBJECTIVE To evaluate the impact of fibromyalgia on the quality of life of individuals with fibromyalgia, who were categorized according to the FIQ during the coronavirus disease pandemic. DESIGN AND SETTING A cross-sectional study was conducted at an institution of higher education in Taquara, RS, Brazil. METHODS A quantitative study was carried out, with the application of a sociodemographic and clinical questionnaire, and the FIQ in 163 Brazilian individuals with a medical diagnosis of fibromyalgia. Data were collected using SurveyMonkey software. RESULTS Of the female carriers, 98.2% were living in urban areas, working, and under pharmacological and complementary treatment. The FIQ results showed that seven of the 10 items had the maximum score. The items "physical function" and "feel good" had intermediate scores, and the item "missed work" had a low score. The average total score was 79.9 points, indicating that fibromyalgia had a severe impact on the participants' lives. A severe impact of fibromyalgia was observed in 61.3% of the participants, a moderate impact in 30.7%, and a low impact in 8%. CONCLUSION The survey findings suggest a severe impact in the majority of the Brazilian fibromyalgic population.
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Batres-Marroquín AB, Medina-García AC, Vargas Guerrero A, Barrera-Villalpando MI, Martínez-Lavín M, Martínez-Martínez LA. Effect of COVID-19 Pandemic Lockdown on Fibromyalgia Symptoms. J Clin Rheumatol 2022; 28:e289-e291. [PMID: 33264250 PMCID: PMC8745953 DOI: 10.1097/rhu.0000000000001685] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Amital M, Ben-Shabat N, Amital H, Buskila D, Cohen AD, Amital D. COVID-19 associated hospitalization in 571 patients with fibromyalgia-A population-based study. PLoS One 2021; 16:e0261772. [PMID: 34968398 PMCID: PMC8717981 DOI: 10.1371/journal.pone.0261772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/07/2021] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE To identify predicators of patients with fibromyalgia (FM) that are associated with a severe COVID-19 disease course. METHODS We utilized the data base of the Clalit Health Services (CHS); the largest public organization in Israel, and extracted data concerning patients with FM. We matched two subjects without FM to each subject with FM by sex and age and geographic location. Baseline characteristics were evaluated by t-test for continuous variables and chi-square for categorical variables. Predictors of COVID-19 associated hospitalization were identified using univariable logistic regression model, significant variables were selected and analyzed by a multivariable logistic regression model. RESULTS The initial cohort comprised 18,598 patients with FM and 36,985 matched controls. The mean age was 57.5± 14.5(SD), with a female dominance of 91%. Out of this cohort we extracted the study population, which included all patients contracted with COVID-19, and consisted of 571 patients with FM and 1008 controls. By multivariable analysis, the following variables were found to predict COVID-19 associated hospitalization in patients with FM: older age (OR, 1.25; CI, 1.13-1.39; p<0.001), male sex (OR, 2.63; CI, 1.18-5.88; p<0.05) and hypertension (OR, 1.75; CI, 1.04-2.95; p<0.05). CONCLUSION The current population-based study revealed that FM per se was not directly associated with COVID-19 hospitalization or related mortality. Yet classical risk factors endangering the general population were also relevant among patients with FM.
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Duhn PH, Locht H, Wæhrens EE, Christensen R, Thielen K, Henriksen M, Kristensen LE, Bliddal H, Amris K. Prognostic factors for work disability in patients with chronic widespread pain and fibromyalgia: protocol for a cohort study. BMJ Open 2021; 11:e052919. [PMID: 34937720 PMCID: PMC8705086 DOI: 10.1136/bmjopen-2021-052919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The association between chronic widespread pain (CWP) and disability is well established. Although research support large interindividual differences in functional outcomes, limited studies are available on the socio-economic consequences of offering stratified treatment based on prognostic factors. Identification of predictors of long-term functional outcomes such as work disability as a critical consequence, could assist early and targeted personalised interventions. The primary objective of this cohort study is to identify prognostic factors for the primary endpoint work status (employed and working vs not working) in patients with CWP assessed 3 years from baseline, that is, at referral for specialist care. METHODS AND ANALYSES Data are collected at the diagnostic unit at Department of Rheumatology, Frederiksberg Hospital. The first 1000 patients ≥18 years of age registered in a clinical research database (DANFIB registry) with CWP either 'employed and working' or 'not working' will be enrolled. Participants must meet the American College of Rheumatology 1990 definition of CWP, that is, pain in all four body quadrants and axially for more than 3 months and are additionally screened for fulfilment of criteria for fibromyalgia. Clinical data and patient-reported outcomes are collected at referral (baseline) through clinical assessment and electronic questionnaires. Data on the primary endpoint work status at baseline and 3 years from baseline will be extracted from the Integrated Labour Market Database, Statistics Denmark and the nationwide Danish DREAM database. Prognostic factor analysis will be based on multivariable logistic regression modelling with the dichotomous work status as dependent variable. ETHICS AND DISSEMINATION Sensitive personal data will be anonymised according to regulations by the Danish Data Protection Agency, and informed consent are obtained from all participants. Understanding and improving the prognosis of a health condition like CWP should be a priority in clinical research and practice. Results will be published in international peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT04862520.
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Magrey MN, Thomas C, Khan MA. The American College of Rheumatology Fibromyalgia Criteria Are Useful in the Evaluation of Fibromyalgia Symptoms in Patients With Ankylosing Spondylitis: A Cross-Sectional Study. J Clin Rheumatol 2021; 27:e399-e403. [PMID: 32701537 DOI: 10.1097/rhu.0000000000001490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Fibromyalgia (FM) is common among patients with ankylosing spondylitis (AS), and its coexistence is believed to interfere with the measurement of patient-reported outcomes of disease activity and function in AS because of overlapping symptoms between the 2 diseases. This can confound clinical assessment and treatment decisions. AIMS The aim of this study was to assess the relationship between the Fibromyalgia Symptom Scale (FSS) and its components, the Widespread Pain Index (WPI), and System Severity Scale with measures of disease activity, function, and patient-reported outcomes in AS. METHODS We recruited 63 AS patients (aged ≥18 years) meeting the modified New York criteria, and Bath Ankylosing Spondylitis Disease Activity Index, Ankylosing Spondylitis Disease Activity Score-C-Reactive Protein, Routine Assessment of Patient Index Data 3, and Bath Ankylosing Spondylitis Functional Index questionnaires were administered to them. The presence of FM was determined using validated 2010 American College of Rheumatology diagnostic criteria for FM. RESULTS Twenty-eight of 63 patients (44.4%) with AS and FM had higher disease activity and greater impairment of functional ability compared with AS patients without FM. Using multiple linear regression estimates, there was no significant relationship of FSS scores with Bath Ankylosing Spondylitis Disease Activity Index (p = 0.36), Routine Assessment of Patient Index Data 3 (p = 0.50), Ankylosing Spondylitis Disease Activity Score-C-Reactive Protein (p = 0.24), Bath Ankylosing Spondylitis Functional Index (p = 0.42) scores, or erythrocyte sedimentation rate (p = 0.82) and C-reactive protein (p = 0.75). CONCLUSIONS Despite a high prevalence of FM in our patients with the diagnosis of AS, there was no relationship between FSS and measures of disease activity or function in AS, suggesting that FSS and its components could be a useful tool to assess FM in AS patients. Also, FM impairs functional ability in patients with AS.
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