When Antidepressants Tip the Scale: Unmasking Bipolar Disorder or Inducing Mania?
Location
Center for Advanced Learning and Simulation (CALS)
Publication Date
April 2025
Start Date
17-4-2025 8:00 AM
Description
Bipolar disorder is characterized by distinct episodes of mania and depression, while substance-induced bipolar disorder arises from medication or substance use. According to the DSM-5, antidepressant-induced mania warrants a diagnosis of bipolar disorder rather than a substance-induced mood disorder. However, the prevalence and causality of antidepressant-induced manic episodes remain debated. Studies estimate that 20–40% of patients with undiagnosed bipolar disorder experience a manic switch when treated with antidepressants, with higher risk associated with tricyclic antidepressants and serotonin-norepinephrine reuptake inhibitors. The debate persists on whether antidepressants unmask an underlying bipolar disorder or pharmacologically induce mania. This case report is about a 46-year-old female with no prior psychiatric history presented with 12 days of irritability, anxiety, and goal-directed activity following the initiation of sertraline and trazodone. On examination, she exhibited manic symptoms, requiring observation without pharmacologic intervention to assess for substance-induced mania. A negative urine drug screen and collateral history revealing chronic periods of impulsivity and pressured speech supported a bipolar diagnosis. Due to persistent manic symptoms requiring chemical restraints, she was initiated on olanzapine and valproic acid, leading to symptom resolution over 16 days. She was discharged with a diagnosis of bipolar I disorder, most recent episode manic. This case underscores the clinical challenge of diagnosing bipolar disorder in antidepressant-induced mania and highlights the risks associated with antidepressant use in undiagnosed bipolar patients. While the overall incidence of antidepressant-induced mania in unipolar depression is lower, this case aligns with literature cautioning against antidepressant monotherapy in suspected bipolar disorder. It further contributes to the ongoing discussion of whether antidepressants reveal latent bipolarity or directly induce mania. Similar case reports reinforce the need for thorough psychiatric evaluation before prescribing antidepressants.
Recommended Citation
Mierl, Jackson MD and Ross, Steven MD, "When Antidepressants Tip the Scale: Unmasking Bipolar Disorder or Inducing Mania?" (2025). Dept. of Psychiatry Research Symposium. 27.
https://digitalscholar.lsuhsc.edu/psych_rd/2025/presentations/27
When Antidepressants Tip the Scale: Unmasking Bipolar Disorder or Inducing Mania?
Center for Advanced Learning and Simulation (CALS)
Bipolar disorder is characterized by distinct episodes of mania and depression, while substance-induced bipolar disorder arises from medication or substance use. According to the DSM-5, antidepressant-induced mania warrants a diagnosis of bipolar disorder rather than a substance-induced mood disorder. However, the prevalence and causality of antidepressant-induced manic episodes remain debated. Studies estimate that 20–40% of patients with undiagnosed bipolar disorder experience a manic switch when treated with antidepressants, with higher risk associated with tricyclic antidepressants and serotonin-norepinephrine reuptake inhibitors. The debate persists on whether antidepressants unmask an underlying bipolar disorder or pharmacologically induce mania. This case report is about a 46-year-old female with no prior psychiatric history presented with 12 days of irritability, anxiety, and goal-directed activity following the initiation of sertraline and trazodone. On examination, she exhibited manic symptoms, requiring observation without pharmacologic intervention to assess for substance-induced mania. A negative urine drug screen and collateral history revealing chronic periods of impulsivity and pressured speech supported a bipolar diagnosis. Due to persistent manic symptoms requiring chemical restraints, she was initiated on olanzapine and valproic acid, leading to symptom resolution over 16 days. She was discharged with a diagnosis of bipolar I disorder, most recent episode manic. This case underscores the clinical challenge of diagnosing bipolar disorder in antidepressant-induced mania and highlights the risks associated with antidepressant use in undiagnosed bipolar patients. While the overall incidence of antidepressant-induced mania in unipolar depression is lower, this case aligns with literature cautioning against antidepressant monotherapy in suspected bipolar disorder. It further contributes to the ongoing discussion of whether antidepressants reveal latent bipolarity or directly induce mania. Similar case reports reinforce the need for thorough psychiatric evaluation before prescribing antidepressants.