Although most of the research and clinical attention has been on unipolar depression among antenatal and postnatal women, there is evidence that women with bipolar disorders are at increased risk of postnatal psychosis, and women who have depressive symptoms should be screened for bipolar disorder and monitored for elevated mood. However, there is no consensus on the most effective screening method, with a variety of possible tools but no one well validated in antenatal women (Chessick & Dimidji