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Query: UMLS:C0016053 (fibromyalgia)
 4,687 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An infectious cause of fibromyalgia (FM) has been hypothesized based upon the observed similarity of this entity and chronic fatigue syndrome. Three patients developed symptoms of FM after documented episodes of acute parvovirus B19 infections. B19 antibody determinations were obtained approximately 1 month after the symptoms began; both IgM and IgG titers were positive at that time. All 3 patients met criteria for FM. Polysomnography performed on 2 of the patients revealed profound alpha-wave intrusion throughout nonrapid eye movement sleep. A more careful search for viral infections in FM patients whose symptoms appear following a "flu-like" illness appears warranted.
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PMID:Fibromyalgia and parvovirus infection. 165 5

Fibromyalgia (FM) is a very frequent syndrome of unknown cause, characterized by generalized pain, fatigue and a number of tender points to palpation. Among the several etiopathogenic hypotheses discussed, the association of FM with some viral infections has been the object of multiple studies due to its relation and similarity with the chronic fatigue syndrome, acknowledges as being related, although not exclusively, with the chronic infection by the Epstein-Barr virus. Many individual descriptions of association between infection with the human parvovirus B19 and FM led us to carry out this study, comparing the serology for that virus in 52 patients with FM and 39 healthy controls. The titers of specific IgG anti-parvovirus B19 antibodies, indicating previous infection with that virus, were determined in all 91 individuals through ELISA method and at the same laboratory. Results revealed, though not significantly, a greater prevalence of positive titers, of which the mean was also higher, in patients than in controls. When comparing the women from both groups, this tendency was even less perceptible. These data imply that there is no etiologic association between infection with the human parvovirus B19 and FM.
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PMID:[Viral infection and fibromyalgia]. 794 34

This study was aimed to evaluate the seroprevalence of parvovirus B19 in patients with fibromyalgia syndrome (FS). Seventy-five patients with FS (44.3 +/- 8.3) and 75 healthy controls (44.2 +/- 8.1) were evaluated. Serum anti-B19 IgM and IgG antibodies were measured by ELISA technique. Patients were questioned about duration of symptoms, characteristic features of FS, and symptoms related with viral infection preceding the onset of FS. No significant difference was found regarding the prevalence of anti-B19 IgM antibodies between the groups (p = 0.494). Seropositivity of anti-B19 IgG of the patients was significantly higher than control group (81.3% vs. 64% respectively, p = 0.027). No statistically significant differences were found regarding to the clinical features between fibromyalgia patients with IgG antibody compared to those without IgG antibody. Parvovirus B19 IgG seropositivity was found to be significantly higher in patients with FS. Parvovirus B19 infection might have a role in the etiopathogenesis of FS or might act as a triggering factor.
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PMID:Seroprevalence of parvovirus B19 in fibromyalgia syndrome. 1905 47

Chronic widespread pain (CWP) is a common symptom within the community, and may be part of or arise as a result of various diseases or conditions. Fibromyalgia (FM) is probably the most common and best known disease whose cardinal symptom is CWP. Many authors, however, indistinctively describe pain as 'widespread', 'diffuse' or 'generalised', and this may lead to misunderstandings about true clinical or scientific significance. Widespread pain has been variously defined, over the years, beginning from the American College of Rheumatology (ACR) classification criteria for FM in 1990, and the CWP Manchester definition in 1996. A comprehensive and brief core sets for CWP was developed in 2003, by the WHO International Classification of Functioning Consensus Conference, and finally, the ACR proposed new preliminary diagnostic criteria for FM in 2010. Research into CWP and/or FM is therefore difficult and can lead to conflicting results. CWP and (particularly) FM are multifactorial disorders. There is increasing evidence that they may be triggered by environmental factors, and many authors have highlighted a relationship with various infectious agents and some have suggested that vaccinations may play a role. This review analyses the available data concerning the relationships between FM and widespread pain (in its various meanings) with infections and vaccinations, from the earliest report to the most recent contributions. Considering all scientific papers, various levels of possible associations emerge. There is no clear-cut evidence of FM or CWP due to infections or vaccinations, no correlations with persistent infection, and no proven relationship between infection, antimicrobial therapies and pain improvement. A higher prevalence of FM and chronic pain has been found in patients with Lyme disease, and HIV or HCV infection, and, perhaps, also in patients with mycoplasmas, HBV, HTLV I, and parvovirus B19 infections. Some unconfirmed evidence and case reports suggest that vaccinations may trigger FM or chronic pain.
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PMID:Chronic widespread pain and fibromyalgia: could there be some relationships with infections and vaccinations? 2224 59