Lusaperidone is primarily used in the treatment of psychiatric disorders, particularly schizophrenia and bipolar disorder. It functions as an antipsychotic agent by modulating dopamine and serotonin receptors in the brain, helping to stabilize mood and reduce symptoms such as hallucinations, delusions, and disorganized thinking. Its application extends to managing acute episodes of psychosis and maintaining long-term stability in patients with chronic mental health conditions. Additionally, it may be prescribed off-label for other mood disorders or conditions where antipsychotic intervention is deemed beneficial. Its efficacy and tolerability make it a valuable option in psychiatric care, often tailored to individual patient needs under medical supervision.