Functional Neurological Disorder Research Program, Cognitive Behavioral Neurology Division, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston (Paredes-Echeverri, Maggio, Perez); Department of Physical Therapy, Massachusetts General Hospital, Boston (Maggio); Adult Psychiatry Division, Department of Mental Health and Psychiatry, University Hospitals of Geneva, Switzerland (Bègue); Laboratory for Clinical and Experimental Psychopathology, Department of Psychiatry, University of Geneva, Switzerland (Bègue); Institute of Psychiatry, Psychology and Neuroscience, King's College, London (Pick, Nicholson); and Division of Neuropsychiatry, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston (Perez).