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The Epidemiology of Dementia Associated with Parkinson's Disease

Authors

  • Dag Aarsland,

    Corresponding author
    1. Department of Psychiatry
    2. Akershus University Hospital, Division of Mental Health Services, and Institute of Clinical Medicine, University of Oslo, 1478 Lørenskog
      Dag Aarsland, MD, PhD, Department of Psychiatry, Stavanger University Hospital, Postboks 8100, 4068 Stavanger, Norway (E-mail: daarsland@gmail.com)
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  • Martin Wilhelm Kurz

    1. Department of Neurology
    2. The Norwegian Centre for Movement Disorders, Stavanger University Hospital, Stavanger, Norway
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Dag Aarsland, MD, PhD, Department of Psychiatry, Stavanger University Hospital, Postboks 8100, 4068 Stavanger, Norway (E-mail: daarsland@gmail.com)

Abstract

Parkinson's disease (PD) is the second most common neurodegenerative illness after Alzheimer's disease (AD). Cognitive impairment and dementia are common features in PD and characterized by a wide range of cognitive deficits distinct from those seen in AD. Mild cognitive impairment occurs even early in PD and is associated with shorter time to dementia. The purpose of this review is to present recent findings on clinical aspects of dementia in PD and to elucidate underlying clinical and neurobiological risk factors.

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