{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T16:01:23Z","timestamp":1791475283395,"version":"4.3.4"},"reference-count":51,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2024,8,9]],"date-time":"2024-08-09T00:00:00Z","timestamp":1723161600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["movementdisorders.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Movement Disorders"],"published-print":{"date-parts":[[2024,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Functional movement disorder (FMD) is a common manifestation of functional neurological disorder. FMD can occur alongside other neurological conditions, but especially in patients with established Parkinson's disease (PD). An interesting observation emerging across cohort studies and case series is that FMD can precede the diagnosis of PD, suggesting that FMD may itself be a prodromal symptom of neurodegeneration. Such a notion would have significant clinical implications for the assessment and management of people with FMD, particularly with respect to decisions around the use of auxiliary investigations, counselling, and follow\u2010up. In this Viewpoint we review the evidence concerning the temporal relationship between FMD and PD. We discuss the potential explanations and mechanisms for FMD as a prodromal symptom of PD, and highlight clinical considerations and important outstanding questions in the field. \u00a9 2024 The Author(s).\n                    <jats:italic>Movement Disorders<\/jats:italic>\n                    published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.\n                  <\/jats:p>","DOI":"10.1002\/mds.29958","type":"journal-article","created":{"date-parts":[[2024,8,9]],"date-time":"2024-08-09T05:10:29Z","timestamp":1723180229000},"page":"1952-1959","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Functional Movement Disorder as a Prodromal Symptom of Parkinson's Disease\u2014Clinical and Pathophysiological Insights"],"prefix":"10.1002","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4994-0488","authenticated-orcid":false,"given":"Elie","family":"Matar","sequence":"first","affiliation":[{"name":"UCL Queen Square Institute of Neurology Department of Clinical and Movement Neurosciences  London United Kingdom"},{"name":"Central Clinical School, Faculty of Medicine and Health University of Sydney  Sydney NSW Australia"},{"name":"Department of Neurology Royal Prince Alfred Hospital  Sydney NSW Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2370-7063","authenticated-orcid":false,"given":"Michele","family":"Tinazzi","sequence":"additional","affiliation":[{"name":"Neurology Unit, Movement Disorders Division, Department of Neurosciences Biomedicine and Movement Sciences University of Verona  Verona Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark 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