[Comment] Perinatal psychiatry: thinking in threes—before, during, and after pregnancy

Perinatal psychiatry is a recent specialty. Only a few countries offer specific training and specialised care, even though it is considered a major public health issue worldwide.1 Perinatal psychiatry remains ill-defined and has often been reduced to women’s mental health during pregnancy and postpartum. However, the World Psychiatric Association recognises that perinatal mental health is both a maternal (if not parental) and an infant mental health issue.2 Peripartum depression is considered the most common health risk for parents and their offspring.