Profile of Cognitive Impairment in Parkinson's Disease
Article first published online: 12 APR 2010
Journal Compilation © 2010 International Society of Neuropathology. No claim to original US government works
Volume 20, Issue 3, pages 640–645, May 2010
How to Cite
Watson, G. S. and Leverenz, J. B. (2010), Profile of Cognitive Impairment in Parkinson's Disease. Brain Pathology, 20: 640–645. doi: 10.1111/j.1750-3639.2010.00373.x
- Issue published online: 12 APR 2010
- Article first published online: 12 APR 2010
- Received 11 December 2009; accepted 31 December 2009.
- Parkinson's disease;
- cognitive impairment;
Cognitive impairment (CI) is a common nonmotor complication of Parkinson's disease (PD), and is associated with significant disability for patients and burden for caregivers. Similar to motor symptoms, the characteristics of CI in PD can be quite variable, both in terms of what cognitive domains are impaired, and the timing of onset and rate of progression. This review will examine the profile of cognitive domain impairments observed in PD, with a focus on early CI (without dementia). We will also discuss possible relationships between specific cognitive domain impairments in PD and pathological processes such as Lewy-related pathology and Alzheimer's disease. It is our hypothesis that the specific characteristics of CI observed in individual PD patients provide clues to the underlying pathological processes, and that understanding the biological basis of this clinical phenomenon will assist in directing disease-specific treatments. Given the high lifetime risk for CI in PD, it is imperative that we improve our understanding and treatments for this common and disabling problem in PD.