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The Cognitive Neuropsychiatry of Parkinson's Disease$
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Patrick McNamara

Print publication date: 2011

Print ISBN-13: 9780262016087

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262016087.001.0001

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Psychosis and Dementia in Parkinson’s Disease

Psychosis and Dementia in Parkinson’s Disease

(p.171) 11 Psychosis and Dementia in Parkinson’s Disease
The Cognitive Neuropsychiatry of Parkinson's Disease

Patrick McNamara

The MIT Press

This chapter finds that the neurodegenerative process involved in Parkinson’s disease (PD) gives rise to severe psychotic and dementic disorders in patients. Psychosis is characterized by detachment or disillusionment and loss of social interaction, while dementia manifests itself in the form of degenerating concentration and interest in any activity. Dementia is mainly observed in PD patients in a later stage, and manifests itself in the form of postural and gait disorders. It spreads across the whole cognitive domain of these patients, including perception, language, thinking, memory, and emotional behavior. Patients suffering from Parkinson’s Disease Dementia also show symptoms of momentary loss of memory, which restricts their ability to intelligently comprehend certain aspects of language and tasks.

Keywords:   psychosis, dementia, cognitive domain, perception, symptoms

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