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1
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Juvenile primary fibromyalgia syndrome. A clinical study of thirty-three patients and matched normal controls.
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Yunus MB; Masi AT
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Arthritis Rheum 1985 Feb;28(2):138-45.
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Primary fibromyalgia syndrome (PFS) is a common and characteristic rheumatologic condition manifested by diffuse musculoskeletal aches, pains, and stiffness frequently modulated by various factors, e.g., weather, physical activity, sleep quality, and anxiety/stress, and accompanied by discrete tender points at typical soft tissue sites. Although well-recognized in adults, this entity has not been reported separately in juveniles. This study documents PFS in 33 juveniles who presented at age 17 or younger and compares their findings with those in age- and sex-matched normal control subjects. As in adult PFS patients, associated non-musculoskeletal symptoms were common, including fatigue, poor sleep, anxiety/stress, headaches, and paresthesias. Physical examination revealed multiple tender points at characteristic soft tissue sites and no objective evidence of arthritis. Routine laboratory test results were normal or negative. Juvenile PFS is often misdiagnosed. Recognition of this common rheumatologic condition in juveniles is important in order to avoid unwarranted investigations and improper management.
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| AD |
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| PMID |
3871615
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6
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| TI |
Assessment of nonarticular tenderness and prevalence of fibromyalgia in children.
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| AU |
Buskila D; Press J; Gedalia A; Klein M; Neumann L; Boehm R; Sukenik S
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J Rheumatol. 1993 Feb;20(2):368-70.
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Fibromyalgia syndrome (FS) is most common in midlife, but may be seen at any age. Its prevalence and assessment of tenderness in healthy children is not known. We assessed 338 healthy schoolchildren for tenderness thresholds and prevalence of FS. In all children a point count of 18 tender points (TP) was conducted by thumb palpation and tenderness of some of the TP sites as well as control point sites was further assessed using a Chatillon dolorimeter. All children and their parents were questioned about the presence of widespread pain or aching. Children were considered to have FS if they met the American College of Rheumatology (ACR) criteria for diagnosis of FS. Of the 338 children, 21 (6.2%) had FS. Thresholds of tenderness of 9 TP were 5.0 (1.2) (kg) [mean (standard deviation)]for boys vs 3.6 (0.8) (kg) for girls (p<0.001). Thresholds of tenderness of the control point sites were 7.1 (1.4) (kg) for boys vs 5.5 (1.1) (kg) for girls (p<0.001). Thresholds of tenderness of TP and control points in the children with FS were 2.5 (0.4) (kg) and 4.2 (0.5) (kg) vs 4.5 (1.2) (kg) and 6.6 (1.4) (kg) respectively in the children without FS (p<0.001). We suggest that FS is common in the pediatric age group. Boys have lower tenderness than girls; children with FS have lower thresholds for tenderness both at control and TP compared to the subjects without FS.
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| AD |
Ben-Gurion University, Beer-Sheva, Israel.
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| PMID |
8474077
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7
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Prevalence of fibromyalgia in children: a clinical study of Mexican children.
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| AU |
Clark P; Burgos-Vargas R; Medina-Palma C; Lavielle P; Marina FF
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| SO |
J Rheumatol 1998 Oct;25(10):2009-14.
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OBJECTIVE: To determine the prevalence of fibromyalgia (FM) in schoolchildren according to the 2 stage classification process proposed by the 1990 American College of Rheumatology (ACR) Multicenter Criteria Committee on Fibromyalgia. METHODS: Stage 1: we administered a pain questionnaire to a sample of 548 schoolchildren (264 boys, 284 girls; mean age 11.9 yrs, range 9-15). Stage 2: two rheumatologists examined all children with diffuse pain. Using thumb palpation, they examined 18 fibromyalgia tender points and 3 pairs of controls points followed by dolorimetry. Additionally, a random sample of 79 children with no pain were selected as controls, following the same procedures (thumb palpation and dolorimetry). The Wilcoxon test was used to compare the distribution of tenderness thresholds between FM and non-FM groups. Kappa statistics for multiple raters was used to assess interobserver agreement. RESULTS: Seven children, all girls, fulfilled the ACR diagnostic criteria for FM. Thus, the prevalence of FM in this group of schoolchildren reached only 1.2%. The girls with FM had a mean of 14 tender points, whereas controls (n = 79) had 2.4. Pain thresholds were 3.4 kg in children with FM and 5.1 kg in controls (p = 0.004). CONCLUSION: The prevalence of FM in our study was 5-fold lower than a previous report. This variance may be due to (1) racial and sociocultural differences between populations; and (2) differences in methodological approach. The difficulties of making accurate estimates of FM across different studies are highlighted.
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| AD |
Clinical Epidemiology Unit, Hospital General de Especialidades Bernardo Sepulveda, Universidad Nacional Autonoma de Mexico Faculty of Medicine, Mexico DF.
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| PMID |
9779859
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8
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Non-specific musculoskeletal pain in preadolescents. Prevalence and 1-year persistence.
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Mikkelsson M; Salminen JJ; Kautiainen H
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Pain. 1997 Oct;73(1):29-35.
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A 1-year follow-up study of 1756 third- and fifth-grade schoolchildren was conducted with a structured pain questionnaire to assess the prevalence and persistence of self-reported musculoskeletal pain symptoms and disability caused by pain. At follow-up, 1626 (92.7%) children participated in the study. Pain at least once a week persisted in 270 (52.4%) of the 564 children who reported musculoskeletal pain at least once a week in at least one part of the body at baseline. Of the regional pain symptoms, neck pain had highest persistence and, in girls, significantly more than in boys. Persistence of pain was not related to school grade. Widespread pain, determined as in the criteria for fibromyalgia, was found in 132 children (7.5%) and persisted in 35 children (29.7%, 95% CI 21.9-38.4) at follow-up. Disability was more severe in children with pain symptoms in more than one area. This study showed that about half of the preadolescents complaining of musculoskeletal pain at least once a week at baseline had persistent pain symptoms at follow-up. The prognosis of widespread pain in preadolescents was almost the same as the previous findings in adults.
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Rehabilitation Center, Rheumatism Foundation Hospital, Heinola, Finland.
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| PMID |
9414054
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9
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The incidence of fibromyalgia and its associated comorbidities: a population-based retrospective cohort study based on International Classification of Diseases, 9th Revision codes.
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Weir PT; Harlan GA; Nkoy FL; Jones SS; Hegmann KT; Gren LH; Lyon JL
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J Clin Rheumatol. 2006 Jun;12(3):124-8.
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BACKGROUND: The epidemiology of fibromyalgia is poorly defined. The incidence of fibromyalgia has not been determined using a large population base. Previous studies based on prevalence data demonstrated that females are 7 times more likely to have fibromyalgia than males and that the peak age for females is during the childbearing years. OBJECTIVE: We have calculated the incidence rate of fibromyalgia in a large, stable population and determined the strength of association between fibromyalgia and 7 comorbid conditions. METHODS: We conducted a retrospective cohort study of a large, stable health insurance claims database (62,000 nationwide enrollees per year). Claims from 1997 to 2002 were examined using the International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes to identify fibromyalgia cases (ICD code 729.1) and 7 predetermined comorbid conditions. RESULTS: A total of 2595 incident cases of fibromyalgia were identified between 1997 and 2002. Age-adjusted incidence rates were 6.88 cases per 1000 person-years for males and 11.28 cases per 1000 person-years for females. Females were 1.64 times (95% confidence interval = 1.59-1.69) more likely than males to have fibromyalgia. Patients with fibromyalgia were 2.14 to 7.05 times more likely to have one or more of the following comorbid conditions: depression, anxiety, headache, irritable bowel syndrome, chronic fatigue syndrome, systemic lupus erythematosus, and rheumatoid arthritis. CONCLUSION: Females are more likely to be diagnosed with fibromyalgia than males, although to a substantially smaller degree than previously reported, and there are strong associations for comorbid conditions that are commonly thought to be associated with fibromyalgia.
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Department of Family and Preventive Medicine, University of Utah, Salt Lake City, Utah 84108, USA. peter.weir@hsc.utah.edu
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| PMID |
16755239
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10
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Fibromyalgia syndrome in children and adolescents: clinical features at presentation and status at follow-up.
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| AU |
Siegel DM; Janeway D; Baum J
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Pediatrics 1998 Mar;101(3 Pt 1):377-82.
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OBJECTIVES: To 1) describe the characteristic features of fibromyalgia syndrome (FS) in a pediatric population, 2) note similarities and differences with FS in adults, and 3) determine outcome after treatment. SETTING AND DESIGN: The Pediatric Rheumatology Clinic at the University of Rochester Medical Center is staffed by two pediatric rheumatologists and serves as a regional subspecialty referral service with approximately 450 annual patient visits, of which approximately 120 are initial evaluations. A retrospective medical record review from 1989 to 1995 was used to identify and describe the study population, and a structured telephone interview served to determine current status and response to treatment. RESULTS: A total of 45 subjects were identified (41 female; 42 white; mean age, 13.3 years), of whom 33 were available for telephone interview at a mean of 2.6 years from initial diagnosis (0.1 to 7.6 years). Of a possible 15 symptoms associated with FS, subjects reported a mean of 8, with>90% experiencing diffuse pain and sleep disturbance. Less frequent were headaches (71%), general fatigue (62%), and morning stiffness (53%). The mean cumulative number of tender points summed over all visits was 9.7 (of 18). Telephone interviews showed improvement in most patients, with a mean positive change of 4.8 on a self-rating scale of 1 to 10 comparing current status to worst-ever condition. CONCLUSIONS: FS in patients referred to a pediatric rheumatology clinic is characterized by diffuse pain and sleep disturbance, the latter being more common than that in adults. The mean number of tender points summed over all visitsis fewer than the criterion of 11 established for adults at a single visit. The majority of patients improved over 2 to 3 years of follow-up.
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| AD |
Division of Immunology, Allergy and Rheumatology, Department of Pediatrics, Strong Children's Research Center, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA.
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| PMID |
9481000
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