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Psychiatric Symptoms Associated with Dementia in Older People with Learning Disability

Published online by Cambridge University Press:  02 January 2018

Steve Moss*
Affiliation:
Hester Adrian Research Centre, University of Manchester
Pradip Patel
Affiliation:
Community Healthcare Bolton, St Peter's House, Bolton BL1 1PP
*
Dr S. Moss, Hester Adrian Research Centre, University of Manchester, Oxford Road, Manchester M13 9PL

Abstract

Background

This paper describes a study of non-cognitive features of dementia in a population of 105 people over 50 years of age, with learning disability.

Method

The study involved psychiatric assessment using the Psychiatric Assessment Schedule for Adults with a Developmental Disability (PAS-ADD), a semi-structured psychiatric interview developed specifically for people who have learning disability. Dementia was diagnosed using a combination of informant interviewing and observation of cognitive change over a three year period.

Results

Sample members with definite dementia had higher levels of sleep difficulty, hypersomnia, irritability, inefficient thought, loss of interest and anhedonia. Discriminant function analysis showed that non-cognitive features could help discriminate between definite and probable cases.

Conclusions

Results support the previously reported observation for the general population that cognitive and non-cognitive features are only weakly related. The study suggests that psychiatric symptom information may be useful in screening for dementia in people with learning disability.

Type
Papers
Copyright
Copyright © 1995 The Royal College of Psychiatrists 

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