title: Another case of "shopping bag" tremor: a difficult to classify action tremor.
abstract: This letter was written in response to: Zesiewicz T, Vu T, Carranza MA, et al. Unusual wrist tremor: unilateral isometric tremor? Tremor Other Hyperkinet Mov. 2014; 4: http://tremorjournal.org/article/view/194.
authors.affiliation: Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
authors.forename: Daphne
authors.initials: D
authors.lastname: Robakis
authors.affiliation: Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, USA ; GH Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY, USA ; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA ; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
authors.forename: Elan D
authors.initials: ED
authors.lastname: Louis
keywords: Tremor; isometric tremor; task-specific tremor