This clinical text provides a comprehensive overview of bipolar and related disorders, detailing the diagnostic differences between Bipolar I, Bipolar II, and cyclothymic disorder. It explores the biological and environmental origins of these conditions while emphasizing the severity of manic episodes and the high risk of suicide. The material outlines essential nursing interventions and communication strategies designed to stabilize patients during acute psychiatric crises. Key pharmacological treatments are explained, specifically focusing on the therapeutic monitoring of lithium and the use of anticonvulsants or antipsychotics. Finally, the source highlights the necessity of long-term maintenance, patient education, and integrated therapies to prevent relapse and support functional recovery.