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Prophylactic lithium and personality variables. An international collaborative study

U Bonetti, F Johansson, L von Knorring

    International Pharmacopsychiatry
    |January 1, 1977
    PubMed
    Summary
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    Lithium treatment for bipolar and unipolar affective disorders may alter personality traits. Patients showed changes in sociability and impulsivity, with a notable decrease in N-scores, suggesting therapeutic effects.

    Area of Science:

    • Psychiatry
    • Clinical Psychology
    • Pharmacology

    Background:

    • Psychotic affective disorders encompass both bipolar and unipolar conditions.
    • Lithium is a common mood stabilizer used for relapse prevention.
    • Personality changes are often observed in patients with affective disorders.

    Purpose of the Study:

    • To investigate personality changes in patients with bipolar and unipolar affective disorders undergoing lithium treatment.
    • To determine if personality alterations differ between bipolar and unipolar patients.
    • To assess the impact of lithium on specific personality characteristics like sociability and impulsivity.

    Main Methods:

    • Sixty-one patients (28 bipolar, 33 unipolar) completed personality inventories (EPI and MNT) pre-treatment and after six months of lithium therapy.

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  • Personality characteristics were analyzed to identify changes related to sociability and impulsivity.
  • Statistical analysis was performed to compare changes between patient groups.

    • Main Results:

    • Results aligned with predictions, indicating personality changes occurred in both bipolar and unipolar patients.
    • Changes in personality characteristics related to sociability and impulsivity were observed.
    • A significant decrease in N-scores was noted in both patient groups.

    Conclusions:

    • Lithium treatment appears to influence personality characteristics in patients with bipolar and unipolar affective disorders.
    • Observed personality changes may reflect both the therapeutic efficacy of lithium and its direct effects on personality traits.
    • Further research is warranted to fully elucidate the mechanisms underlying lithium's impact on personality.