{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,2]],"date-time":"2025-10-02T00:50:26Z","timestamp":1759366226461,"version":"build-2065373602"},"reference-count":5,"publisher":"Danish Medical Association","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Ugeskr L\u00e6ger"],"abstract":"<jats:p>Polycythaemia vera (PV) is a chronic myeloproliferative disorder. PV should be suspected with hemoglobin &gt;10.2\/9.9 mmol\/L (m\/f) and\/or PV-related features (aquagenic pruritus, erythromelalgia, atypical thrombosis, splenomegaly, thrombocytosis or leukocytosis). This case report highlights the connection between PV and neurological manifestations, including rare symptoms like chorea. An 82-year-old woman presented with sudden choreiform movements, dysarthria, and behavioral changes. Investigations ruled out primary neurological disease and confirmed PV. With treatment, the neurological symptoms resolved.<\/jats:p>","DOI":"10.61409\/v04250261","type":"journal-article","created":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T11:01:34Z","timestamp":1759143694000},"page":"1-3","source":"Crossref","is-referenced-by-count":0,"title":["Hemichorea caused by polycythemia vera"],"prefix":"10.61409","author":[{"given":"Nanna Wittrup","family":"Sodemann","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter Kolind","family":"Brask-Thomsen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter Buur van Kooten","family":"Niekerk","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"40208","published-online":{"date-parts":[[2025,9,22]]},"reference":[{"key":"ref0","doi-asserted-by":"publisher","unstructured":"Tefferi A, Barbui T. Polycythemia vera: 2024 update on diagnosis, risk-stratification, and management. Am J Hematol. 2023;98(9):1465-1487. https:\/\/doi.org\/10.1002\/ajh.27002","DOI":"10.1002\/ajh.27002"},{"key":"ref1","unstructured":"Stimming EF, Zadegan SA, Patino J. Clinical approach to the diagnostic evaluation of chorea. Pract Neurol. 2024;23(7):21-25"},{"key":"ref2","doi-asserted-by":"publisher","unstructured":"Barbui T, Carobbio A, Rumi E et al. In contemporary patients with polycythemia vera, rates of thrombosis and risk factors delineate a new clinical epidemiology. Blood. 2014;124(19):3021-3. https:\/\/doi.org\/10.1182\/blood-2014-07-591610","DOI":"10.1182\/blood-2014-07-591610"},{"key":"ref3","doi-asserted-by":"publisher","unstructured":"Bruyn GW, Padberg G. Chorea and polycythaemia. Eur Neurol. 1984;23(1):26-33. https:\/\/doi.org\/10.1159\/000115674","DOI":"10.1159\/000115674"},{"key":"ref4","doi-asserted-by":"publisher","unstructured":"Marvi MM, Lew MF. Polycythemia and chorea. Handb Clin Neurol. 2011;100:271-6. https:\/\/doi.org\/10.1016\/B978-0-444-52014-2.00019-7","DOI":"10.1016\/B978-0-444-52014-2.00019-7"}],"container-title":["Ugeskrift for L\u00e6ger"],"original-title":[],"deposited":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T14:18:30Z","timestamp":1759328310000},"score":1,"resource":{"primary":{"URL":"https:\/\/ugeskriftet.dk\/videnskab\/V04250261"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9,22]]},"references-count":5,"URL":"https:\/\/doi.org\/10.61409\/v04250261","relation":{},"ISSN":["0041-5782","1603-6824"],"issn-type":[{"type":"print","value":"0041-5782"},{"type":"electronic","value":"1603-6824"}],"subject":[],"published":{"date-parts":[[2025,9,22]]}}}