Old-onset Parkinson's disease compared with young-onset disease: clinical differences and similarities.


Of 261 patients with clinically diagnosed Parkinson's disease (PD), whose age at the onset was 58.2 +/- 11.3, 46 patients with the onset age above 70 (the mean for the whole group + 1SD) were compared to 44 patients with onset age below 47 (the mean for the whole group - 1 SD). Old-onset PD patient were more susceptible to develop psychotic complications of… (More)


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