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J Neurol Neurosurg Psychiatry. 2004 Jan;75(1):146-8.

Dementia associated mental and behavioural disturbances in elderly people in the community: findings from the first Nakayama study.

Author information

  • 1Department of Neuropsychiatry, Ehime University School of Medicine, Ehime, Japan. mikeda@m.ehime-u.ac.jp

Abstract

OBJECTIVE:

To determine the prevalence of mental and behavioural disturbances associated with dementia in elderly people living in the Japanese community of Nakayama.

METHODS:

A door to door three phase population survey was carried out on all persons aged 65 years and older living at home. The study included a psychiatric interview, neurological and neuropsychological examination, and cranial computed tomography. Participants with dementia were rated on the neuropsychiatric inventory.

RESULTS:

Of 1438 inhabitants, 1162 (81.0%) completed the protocol. The prevalence of dementia was 4.8%. Of the 60 participants with dementia (Alzheimer's disease 35%, vascular dementia 47%, and dementia from other causes 17%), 53 (88.3%) had shown one or more mental and behavioural disturbances. Apathy/indifference (56.7%), followed by agitation/aggression (35%), aberrant motor behaviour (31.7%), and irritability (31.7%) were the common symptoms. More productive (positive) symptoms such as delusions and aberrant motor behaviour were found in the Alzheimer group than in the vascular dementia group.

CONCLUSIONS:

A wide range of dementia associated mental and behavioural disturbances developed in the majority of community dwelling individuals with dementia. The findings suggest that a screening programme focusing on identifying these symptoms should be included in the physician's diagnostic tools for dementia.

PMID:
14707327
[PubMed - indexed for MEDLINE]
PMCID:
PMC1757456
Free PMC Article
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