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Psychosis associated with demonstrable brain disease.

A Feinstein¹, M A Ron

¹National Hospital for Nervous Diseases, London.

Psychological Medicine

|November 1, 1990

Summary

Psychotic patients with brain pathology often present with schizophrenia-like symptoms, regardless of lesion location. Their outcome predictors resemble those of schizophrenia, questioning their classification.

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Area of Science:

Neuroscience
Psychiatry
Neurology

Background:

Psychotic disorders can arise from demonstrable brain pathology.
Understanding the relationship between brain lesions and psychotic phenomenology is crucial for diagnosis and treatment.

Purpose of the Study:

To investigate the association between the location of brain pathology and the type of psychotic disorder observed.
To determine if patients with brain pathology and psychosis share similar outcome predictors with schizophrenia.

Main Methods:

Assessment of sixty-five psychotic patients with confirmed brain pathology and various neurological disorders.
Evaluation of patient phenomenology and treatment outcomes.
Analysis of the relationship between the site of brain lesions and psychotic disorder type.

Main Results:

No significant relationship was identified between the site of brain pathology and the specific type of psychotic disorder.
A majority of patients exhibited syndromes clinically indistinguishable from schizophrenia, even without obvious coarse brain involvement.
Variables predicting the outcome of psychosis in these patients were similar to those observed in schizophrenia.

Conclusions:

The site of brain pathology does not appear to dictate the type of psychotic disorder.
The diagnostic and nosological classification of psychotic disorders in patients with brain pathology requires further consideration.
Findings suggest a potential overlap in the underlying mechanisms or presentation of psychosis in patients with and without overt brain lesions.

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