{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T11:05:15Z","timestamp":1789124715274,"version":"build-2803163510"},"reference-count":163,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T00:00:00Z","timestamp":1759795200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"European Union\u2013NextGenerationEU","award":["118\/2023"],"award-info":[{"award-number":["118\/2023"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Fibromyalgia is a chronic syndrome characterized by widespread musculoskeletal pain, fatigue, non-restorative sleep, and cognitive impairment. Its pathogenesis reflects a complex interplay between central and peripheral mechanisms, including altered pain modulation, neuroinflammation, mitochondrial dysfunction, autonomic imbalance, and genetic and epigenetic factors. Evidence from neuroimaging, omics studies, and neurophysiology supports this multifactorial model. Epidemiological updates confirm a global prevalence of 2\u20138%, with a strong female predominance and a significant impact on quality of life and healthcare costs. Diagnostic criteria have evolved from the 1990 American College of Rheumatology tender points to the 2010\/2011 revisions and the 2016 update, improving case ascertainment but still lacking objective biomarkers. Recent omics and systems biology approaches have revealed transcriptional, proteomic, and metabolic signatures that may enable molecularly informed stratification. Therapeutic management remains multidisciplinary, combining pharmacological interventions (e.g., duloxetine, pregabalin, milnacipran) with non-pharmacological strategies such as graded aerobic exercise and cognitive behavioral therapy. Emerging approaches include drug repurposing to target neuroinflammation, mitochondrial dysfunction, and nociceptive pathways. Despite promising advances, progress is limited by small sample sizes, heterogeneous cohorts, and lack of standardization across studies. Future priorities include large-scale validation of biomarkers, integration of multi-omics with clinical phenotyping, and the design of precision-guided trials. By synthesizing mechanistic insights with clinical evidence, this review provides an updated framework for the diagnosis and management of fibromyalgia, highlighting pathways toward biomarker-guided, personalized medicine.<\/jats:p>","DOI":"10.3390\/ijms26199762","type":"journal-article","created":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T15:48:30Z","timestamp":1759852110000},"page":"9762","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["In Search of Molecular Correlates of Fibromyalgia: The Quest for Objective Diagnosis and Effective Treatments"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-0400-8400","authenticated-orcid":false,"given":"Sveva","family":"Bonomi","sequence":"first","affiliation":[{"name":"Department of Science and High Technology, University of Insubria, Via Manara 7, 21052 Busto Arsizio, VA, Italy"},{"name":"Escuela de Doctorado, Universidad Cat\u00f3lica de Valencia San Vicente M\u00e1rtir, 46001 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0598-2907","authenticated-orcid":false,"given":"Elisa","family":"Oltra","sequence":"additional","affiliation":[{"name":"Department of Pathology, School of Medicine and Health Sciences, Universidad Cat\u00f3lica de Valencia San Vicente M\u00e1rtir, 46001 Valencia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6065-6699","authenticated-orcid":false,"given":"Tiziana","family":"Alberio","sequence":"additional","affiliation":[{"name":"Department of Science and High Technology, University of Insubria, Via Manara 7, 21052 Busto Arsizio, VA, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Siracusa, R., Paola, R.D., Cuzzocrea, S., and Impellizzeri, D. 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