Alcohol misuse in bipolar depression: the effect of bright light therapy on irritability, agitation, and anger attacks

Objectives This study aims to investigate the effectiveness of Bright Light Therapy (BLT) in reducing irritability, psychomotor agitation, and anger attacks in patients with bipolar depression comorbid with alcohol misuse. These symptoms, though commonly observed in clinical practice, have been under-researched, particularly in relation to treatment and prevention strategies. Methods A randomized trial was conducted with 60 inpatients diagnosed with bipolar disorder (BD), depressive episode, and comorbid alcohol misuse. Participants were divided into two groups: Group A received pharmacotherapy augmented with BLT, while Group B received pharmacotherapy alone. Assessments included qualitative evaluations of irritability, psychomotor agitation, and anger attacks, along with the Hamilton Depression Rating Scale for depressive symptoms and the Modified Overt Aggression Scale for aggression. Results After a four-week BLT regimen, Group A exhibited approximately half the cases of irritability and agitation, and a third fewer cases of anger attacks, compared to their counterparts in Group B. Notably, the positive effects of BLT on these symptoms were independent of depressive symptom remission. Conclusions BLT shows promise as a well-tolerated, adjunctive therapy for managing the symptom-complexes of irritability, psychomotor agitation, and anger attacks in patients with bipolar depression comorbid with alcohol misuse. The therapeutic implications of these findings suggest that BLT could be a valuable addition to comprehensive treatment plans, offering a new approach to managing the challenges of BD.