Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Bipolar II disorderUpdated: 2017-06-13OverviewBipolar II disorder is a less severe type of bipolar disorder. It involves at least one depressive episode lasting at least two weeks and at least one hypomanic episode lasting at least four days. SymptomsDepressive symptoms include sadness or hopelessness. Hypomanic symptoms include a persistently elevated or irritable mood. TreatmentsTreatment includes counseling and medications, such as mood stabilizers. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use