Chorea, Pruritus and Polycythemia: Looking for Clues
  • Vânia Rodrigues
    Internal Medicine Department, Centro Hospitalar de Leiria, Leiria, Portugal
  • Carolina Lopes
    Neurology Department, Centro Hospitalar de São João, Porto, Portugal
  • Adilson Marcolino
    Neurology Department, Centro Hospitalar de São João, Porto, Portugal
  • Madalena Pinto
    Neurology Department, Centro Hospitalar de São João, Porto, Portugal


Chorea, polycythemia vera, elderly


Chorea is a movement disorder usually due to vascular, hereditary, metabolic or drug- induced causes, and has rarely been reported in association with polycythemia vera (PV). Polycythemic chorea is an uncommon clinical entity that occurs more often in elderly women. PV is a treatable cause of chorea and must be considered during the diagnostic approach. We report the case of a 75-year-old woman with involuntary movements of the mouth and face with subsequent involvement of the trunk and limbs who was admitted for investigation of the chorea. The patient had the haematological attributes of PV and a positive mutation in the janus kinase 2 (JAK2) gene, and was therefore treated with hydroxyurea which led to a marked reduction in the chorea and improvement in haematological parameters. Various aetiologies of chorea must be considered in the elderly. The present case illustrates the importance of considering PV in the differential diagnosis, since its treatment leads to chorea resolution, thus avoiding serious complications.



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    Published: 2019-02-06
    Issue: Vol 6 No 2 (view)

    How to cite:
    Rodrigues V, Lopes C, Marcolino A, Pinto M. Chorea, Pruritus and Polycythemia: Looking for Clues. EJCRIM 2019;6 doi:10.12890/2019_001039.

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