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FC02-04 - Assessment of schizophrenia in adults with intellectual disability and autism - an empirical study

Published online by Cambridge University Press:  16 April 2020

T.L. Bakken ,
H. Martinsen ,
S. Friis ,
S. Lovoll  and
D.E. Eilertsen
T.L. Bakken
Affiliation:
Psychiatric Department for Adults with Intellectual Disability, Oslo University Hospital, Asker, Norway
H. Martinsen
Affiliation:
Psychiatric Department for Adults with Intellectual Disability, Oslo University Hospital, Asker, Norway
S. Friis
Affiliation:
Psychiatric Department for Adults with Intellectual Disability, Oslo University Hospital, Asker, Norway
S. Lovoll
Affiliation:
Psychiatric Department for Adults with Intellectual Disability, Oslo University Hospital, Asker, Norway
D.E. Eilertsen
Affiliation:
Psychiatric Department for Adults with Intellectual Disability, Oslo University Hospital, Asker, Norway

Abstract

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Introduction

In adults with intellectual disability and autism, psychosis is rarely detected due to misinterpretation of psychotic symptoms being autism or idiosyncratic communication. The patients can poorly communicate the delusions and hallucinations they experience. Observable indicators are therefore necessary.

Objectives

To establish reliable and valid behavioural indicators of psychosis in adults with intellectual disability and autism.

Aims

The aim was to investigate behavioural indicators of psychosis in adults with intellectual disability and autism.

Methods

Forty-three patients with intellectual disability and autism from a hospital-based study were recruited. Eight of these patients were assessed as having schizophrenia-like psychosis. They were further examined through a case-report study. Both statistical analysis and data from the case reports were included. Case report data were compared with scores from a validation study of the Psychopathology in Autism Checklist, PAC.

Results

Behavioural disorganisation, severe decreased global functioning, suspected hallucinations and decreased sociability were observed in the eight psychotic patients. The level of disorganisation was significantly higher in the psychotic patients than in the non-psychotic patients - this included patients with “plain” autism. Adequate treatment significantly decreased the level of disorganised behaviour.

Conclusions

Disorganised behaviour, occurring concurrent with disorganised speech, severe decreased global functioning, suspected hallucinations and negative symptoms, were found to be reliable and valid indicators of psychosis.

Type
Research Article
Information
European Psychiatry , Volume 26 , Issue S2: Abstracts of the 19th European Congress of Psychiatry , March 2011 , pp. 1818
Copyright
Copyright © European Psychiatric Association 2011

References

Bakken, T.L.Friis, S.Lovoll, S.Smeby, N.A.Martinsen, H., (2007) Behavioral disorganisation as an indicator of psychosis in adults with intellectual disability and autism. Mental Health Aspects of Developmental Disabilities, 10:237–46. 12:1,17–22.Google Scholar
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