Affiliations: [a]
Department of Neurology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| [b]
Department of Neurology, MRC and Movement Disorder Center, Seoul National University Hospital, Parkinson Study Group, Seoul National University College of Medicine, Seoul, Korea
| [c]
Department of Neurology, Ewha Womans University School of Medicine and Ewha Medical Research Institute, 1071 Anyangcheon-ro, Yangcheon-gu, Seoul, Korea
| [d]
Department of Neurology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
Correspondence:
[*]
Correspondence to: Beomseok Jeon, MD, PhD, Department of Neurology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea. Tel.: +82 2 2072 2876; Fax: +82 2 3672 7553; E-mail: brain@snu.ac.kr.
Abstract: Background:Dyskinesia, wearing off (WO) and freezing of gait (FOG) are troublesome complications degrading quality of life in the course of Parkinson’s disease (PD). Objective:This study evaluated the gross chronological trend of 4 motor complications - peak dose dyskinesia (PDSK), diphasic dyskinesia (DDSK), WO and FOG in a large PD population with stratification by age at disease onset according to the PD duration. Methods:The motor complications of 1212 Korean PD patients were analyzed using Kaplan-Meier curves and Cox proportional hazards models. Results:PDSK and WO appeared first as motor complications and showed accelerated development around the 5 year-PD-duration, while DDSK showed a rather constant development over time and FOG developed around the 10 year-disease duration at an accelerated rate (p < 0.001). A younger age at PD onset predicted an earlier appearance of PDSK, DDSK and WO (p < 0.001), while an older age at onset (≥60 years) was a predictor for FOG (p = 0.014). Conclusion:Motor complications developed with a distinguishing inclination over the PD duration. This study provides insight into the chronological trend of motor complications in PD at a glance.
