The interrelationship of depression, stigma, and suicide risk among patients with bipolar disorder and their caregivers: a six-month follow-up study.

BACKGROUND

Despite significant research on bipolar disorder, the interplay between depression, suicide risk, and stigma in patients with bipolar disorder and their caregivers remains underexplored. This study aimed to examine how stigma and suicide risk affect the severity of depression in both patients with bipolar disorder and their caregivers.

METHODS

We recruited 76 patients with bipolar disorder and their 76 caregivers from a general hospital between August 2023 and July 2024. Assessments included a psychiatric diagnostic interview using the Mini-International Neuropsychiatric Interview, the Hospital Anxiety and Depression Scale, the Family APGAR Index, the Stigma Subscale of the Explanatory Model Interview Catalogue, and the Suicide Assessment Scale. Structural equation modeling (SEM) was employed to explore the mechanisms underlying depression in caregivers. Additionally, a stepwise forward logistic regression model identified key factors associated with depressive disorders in caregivers.

RESULTS

Among caregivers, depressive disorders were the most common psychiatric diagnosis (27.6%), followed by anxiety disorders (17.1%) and insomnia disorders (11.8%). SEM analysis revealed that suicidal ideation in patients (β = 0.72, p < 0.001) was significantly associated with depression severity in patients with bipolar disorder. Caregivers' stigma (β = 0.41, p < 0.001) and suicide risk (β = 0.39, p < 0.001) were positively associated with their own depression severity. Interestingly, caregivers' suicide risk (β = -0.20, p < 0.01) was inversely related to patients' depression severity. Unemployment, anxiety severity, suicide risk, and family support were also significant predictors of depression in caregivers.

CONCLUSIONS

Suicidal ideation in patients with bipolar disorder is strongly linked to the severity of their depressive symptoms. Among caregivers, higher levels of stigma and suicide risk are associated with greater depressive symptom severity, while caregivers' suicide risk appears to have a protective effect on patients' depression severity. Early identification and targeted interventions for individuals at high risk of suicide and stigma may help alleviate depression in both patients and their caregivers.