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Symptoms of Psychoses

A Factor–Analytic Study

Published online by Cambridge University Press:  02 January 2018

Toshinori Kitamura ,
Yuji Okazaki ,
Akira Fujinawa ,
Masahiro Yoshino  and
Yomishi Kasahara
Toshinori Kitamura*
Affiliation:
Department of Sociocultural Environmental Research, National Institute of Mental Health
Yuji Okazaki
Affiliation:
Department of Psychiatry, Nagasaki University School of Medicine, Nagasaki
Akira Fujinawa
Affiliation:
National Institute of Mental Health
Masahiro Yoshino
Affiliation:
Oizumi Hospital
Yomishi Kasahara
Affiliation:
Department of Psychiatry, Fujita Health University School of Medicine, Japan
*
T. Kitamura, Department of Sociocultural Environmental Research, National Institute of Mental Health, 1-7-3 Konodai, Ichikawa, Chiba, Japan
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Abstract

Background

The literature on the statistical analysis of symptoms of psychoses was limited to positive and negative symptoms in schizophrenia. The present study explored the relationship between positive and negative symptoms as well as affective symptoms in a wider category of psychotic disorders.

Method

The symptoms of 584 psychiatric patients, consecutively admitted to any of the 95 mental hospitals in Japan, were studied. They manifested at least one of the following: (a) delusions, (b) hallucinations, (c) formal thought disorder, (d) catatonic symptoms, or (e) negative (defect) symptoms.

Results

Factor analysis yielded five factors interpretable as (a) manic symptoms, (b) depressive symptoms, (c) negative (defect) symptoms and formal thought disorders, (d) positive (psychotic) symptoms, and (e) catatonic symptoms.

Conclusion

These results suggest that although major symptoms seen among psychotic patients can be categorised into positive, negative, manic, and depressive groups, corresponding to current knowledge of phenomenology, catatonic symptoms constitute a discrete syndrome, while formal thought disorders merge into the negative syndrome.

Type
Papers
Information
The British Journal of Psychiatry , Volume 166 , Issue 2 , February 1995 , pp. 236 - 240
Copyright
Copyright © 1995 The Royal College of Psychiatrists 

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