Rate of switch from bipolar depression into mania after morning light therapy: A historical review.
Study Goal
The researchers aimed to evaluate the efficacy and safety of light therapy (LT) for bipolar depression, specifically assessing the rate of manic switches compared to antidepressant pharmacotherapy.
Results Summary
Light therapy showed efficacy for bipolar depression with effect sizes comparable to antidepressant trials. The rate of manic switches was low (0.9% for mania, 1.4% for hypomania), influenced by the method of symptom assessment.
Population
Patients with bipolar disorder (BD) (799 participants across 41 studies).
Effective Dosage
Not specified
Duration
Not specified
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
Light therapy (LT) | decrease | bipolar depression | patients with bipolar disorder (BD) | effect sizes equivalent to those in antidepressant pharmacotherapy trials | is efficacious for | #1 |
antidepressant drug treatment | increase | manic switches | Patients with bipolar disorder (BD) | 15-40% | show a 15-40% rate of | #2 |
antidepressant LT | increase | mania | 799 patients with BD | 0.9% | switched into | #3 |
antidepressant LT | increase | hypomania | 799 patients with BD | 1.4% | switched into | #4 |
method of assessment of treatment-emergent symptoms | increase | detection of switches into mania | - | - | significantly influenced the detection of switches into mania | #5 |
no method | no change | switches into mania | - | 0% | detection of switches into mania | #6 |
clinical mental state examination | increase | switches into mania | - | 0.8% | detection of switches into mania | #7 |
rating scales | increase | switches into mania | - | 3% | detection of switches into mania | #8 |
Light therapy (LT) is efficacious for bipolar depression with effect sizes equivalent to those in antidepressant pharmacotherapy trials. Patients with bipolar disorder (BD) show a 15-40% rate of manic switches during antidepressant drug treatment. The rate of manic switches during LT has never been estimated. We searched all the literature studies reporting effects of antidepressant LT in BD. 41 studies described 799 patients with BD treated with antidepressant LT, from among which 7 (0.9%) switched into mania and 11 (1.4%) switched into hypomania. The method of assessment of treatment-emergent symptoms significantly influenced the detection of switches into mania: 0% when no method was reported, 0.8% with clinical mental state examination, and 3% with rating scales (χ