Functional (psychogenic) symptoms in Parkinson's disease
Relevant conflicts of interest/financial disclosures: Nothing to report.
Full financial disclosures and author roles may be found in the online version of this article.
Funding agencies: Mark J. Edwards is funded by the National Institute for Health Research (NIHR) (6187). Isabel Pareés is funded by a Fundacion Alfonso Martin Escudero Grant. Tabish A. Saifee is funded by the NIHR. Anna Sadnicka is funded by the Guarantors of Brain with an Association of British Neurologists Clinical Training. This work was undertaken at UCL Hospital/UCL, which received a proportion of funding from the Department of Health's National Institute for Health Research Biomedical Research Centre funding scheme.
It has been reported that patients who have Parkinson's disease have a high prevalence of somatisation (functional neurological symptoms) compared with patients who have other neurodegenerative conditions. Numerous explanations have been advanced for this phenomenon. Here, with illustrative cases, we discuss this topic, including its clinical importance, and suggest a link between the pathophysiology of Parkinson's disease and the proposed propensity to develop functional symptoms. © 2013 International Parkinson and Movement Disorder Society