Recently, Diederich et al1 reported greater motor impairment and a less aggressive treatment strategy in patients with Parkinson disease (PD) who had old-age onset compared with middle-age onset. To test whether these findings applied to a different population with comparable characteristics, we carried out a similar analysis in a group of patients from the PD registry of the Department of Neurology at the University Hospital of Patras (Patras, Greece).
Papapetropoulos S, Argiriou AA, Ellul J. Clinical Characteristics of Late-Onset Parkinson Disease. Arch Neurol. 2003;60(12):1815-1816. doi:10.1001/archneur.60.12.1815