Friedman, Joseph H.Beck, James C.Chou, Kelvin L.Clark, GraciaFagundes, Christopher P.Goetz, Christopher G.Herlofson, KarenKluger, BenziKrupp, Lauren B.Lang, Anthony E.Lou, Jao-ShinMarsh, LauraNewbould, AnneWeintraub, Daniel2016-06-272016-06-272016Friedman, Joseph H., Beck, James C., Chou, Kelvin L., et al.. "Fatigue in Parkinson's disease: report from a mutidisciplinary symposium." <i>npj Parkinson's Disease,</i> 2, (2016) Nature Publishing Group: http://dx.doi.org/10.1038/npjparkd.2015.25.https://hdl.handle.net/1911/90592Fatigue is a severe problem for many people living with Parkinson's disease (PD). Best estimates suggest that more than 50% of patients experience this debilitating symptom. Little is known about its etiology or treatment, making the understanding of fatigue a true unmet need. As part of the Parkinson's Disease Foundation Community Choice Research Program, patients, caregivers, and scientists attended a symposium on fatigue on 16 and 17 October 2014. We present a summary of that meeting, reviewing what is known about the diagnosis and treatment of fatigue, its physiology, and what we might learn from multiple sclerosis (MS), depression, and cancer-disorders in which fatigue figures prominently too. We conclude with focused recommendations to enhance our understanding and treatment of this prominent problem in PD.engThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the articleﾒs Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material.Journal articlehttp://dx.doi.org/10.1038/npjparkd.2015.25