A 38-year-old woman with bipolar disorder has been stable on lithium for the past 2 years. She comes to her psychiatrist's office in tears after a 2-week history of a depressed mood, poor concentration, loss of appetite, and passive suicidal ideation. Which of the following steps should the psychiatrist take next?
Pt has depression and psychotic symptoms, so treatment is antidepressant along with antipsychotic drugs
Sta the patient on a second mood stabilizer
Sta the patient on a long-acting benzodiazepine
Stop the lithium and sta an antidepressant
Sta an antidepressant and continue the lithium