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Reactive psychoses. A family study.

M S McCabe, E Strömgren

    Archives of General Psychiatry
    |April 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    This study defines diagnostic criteria for reactive psychoses, distinguishing them from manic-depressive psychoses and schizophrenia. Findings suggest a distinct genetic basis for reactive psychoses, supporting its separate diagnostic category.

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    Area of Science:

    • Psychiatry
    • Clinical Psychology
    • Genetics

    Background:

    • Reactive psychoses, also known as psychogenic psychoses, have been primarily studied by Scandinavian researchers.
    • Existing literature often lacks clear diagnostic criteria differentiating reactive psychoses from other psychotic disorders like manic-depressive psychosis and schizophrenia.

    Purpose of the Study:

    • To establish clear diagnostic criteria for reactive psychoses.
    • To investigate the familial patterns and genetic overlap of reactive psychoses with manic-depressive psychosis and schizophrenia.
    • To determine if reactive psychoses warrants a separate diagnostic category.

    Main Methods:

    • Defined specific diagnostic criteria for reactive psychoses.
    • Selected 40 Danish probands diagnosed with reactive psychoses.

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  • Collected family history data through personal interviews and record reviews.
  • Age-corrected family history data for comparison with other studies.

    • Main Results:

    • Siblings of individuals with reactive psychoses showed a significantly higher incidence of reactive psychoses compared to siblings of individuals with manic-depressive psychosis or schizophrenia.
    • Siblings of individuals with reactive psychoses had significantly less schizophrenia than siblings of individuals with schizophrenia.
    • A genetic overlap between reactive psychoses and manic-depressive psychosis was observed, but distinct patterns emerged.

    Conclusions:

    • The established diagnostic criteria help differentiate reactive psychoses from other psychotic disorders.
    • Family history data indicates a unique genetic component to reactive psychoses.
    • The findings support the classification of reactive psychoses as a distinct diagnostic category separate from manic-depressive psychosis and schizophrenia.