RT Book, Section A1 Faulkner, Michele A. A2 Sutton, S. Scott SR Print(0) ID 7254546 T1 Chapter 50. Parkinson Disease T2 McGraw-Hill's NAPLEX® Review Guide YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-175562-7 LK accesspharmacy.mhmedical.com/content.aspx?aid=7254546 RD 2024/04/16 AB Parkinson disease (PD) is a highly prevalent neurodegenerative disorder secondary in prevalence only to Alzheimer disease.1 Approximately 2% of the geriatric population is affected, though younger persons can also develop the disease.2 The mean age of onset is 65 years, and men are affected more often than women. Associated morbidity is substantial, and results in increased hospitalizations, increased prescription drug utilization and more frequent placement in long-term care facilities as compared to the general population.3 Though in most cases persons with PD can expect to live into old age, their life expectancy is somewhat shorter than average.4,5 The disease is progressive, and no cure has been identified to date.