Benjamin J Dorfman

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Impulse control disorders (ICDs) are potentially serious side effects of dopamine agonist therapy in Parkinson's disease (PD), but prospective data are lacking about their incidence, time course, and risk factors. This work was a 4-year, prospective cohort study of outpatients with PD and no previous ICDs (N = 164). All subjects treated with a dopamine(More)
AIM We sought to identify markers of motor and nonmotor function in Parkinson's disease (PD) using advanced neuroimaging techniques in subjects with PD. METHODS We enrolled 26 nondemented PD subjects and 12 control subjects. All subjects underwent [(18)F]fluorodeoxyglucose positron emission computed tomography (FDG-PET) and magnetic resonance imaging, and(More)
BACKGROUND Episodes of subacute worsening of motor function occur commonly in Parkinson disease (PD), but there has been surprisingly little research about the clinical characteristics of these exacerbations in the outpatient setting. METHODS Retrospective study of an established cohort of 120 outpatients with PD. Primary outcome measures were the(More)
BACKGROUND Patient telephone calls are a major form of unreimbursed healthcare utilization in Parkinson's disease (PD), yet little is known about potential risk factors for frequent calling behavior. METHODS Prospective cohort study of 175 non-demented outpatients with PD. Our primary outcome measure was the frequency of patient telephone calls over a(More)
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