A NIS Evaluating the Treatment Patterns of Atypical Antipsychotics in Patients Diagnosed With Bipolar I or II Disorder

Inclusion Criteria: * Outpatients, diagnosed with Bipolar I or II Disorder, having presented or presenting a major depressive episode (according to DSM-IV-TR) with a starting date of 6 months maximum before the inclusion. * Current treatment with atypical antipsychotic(s) (AAP(s)) minimal 1 month and maximum 6 months prior to the first study visit * Patient takes an AAP at an adequate therapeutic dose as indicated in the local Summary of Product Characteristics (SPC) and current medical practice Exclusion Criteria: * Patients diagnosed with Bipolar I or II, experiencing a hypomanic, manic or mixed episode at time of inclusion * Pregnant or breastfeeding women, or women of childbearing potential not using a medical reliable method of contraception as stated in the SPC of the AAPs