What is a key feature of Major Depressive Disorder with peripartum onset?

The key feature of Major Depressive Disorder with peripartum onset is that symptoms must occur after childbirth. This specific diagnosis recognizes the emergence of depressive symptoms either during pregnancy or within four weeks following delivery, but for peripartum onset specifically, the focus is on symptoms arising after the baby is born. This distinction is crucial as it highlights the timing of the depressive episodes in relation to childbirth, differentiating it from other types of depressive disorders that may occur at different times in the life cycle.

The other options do not align with the diagnostic criteria for Major Depressive Disorder with peripartum onset. However, it is essential to understand that while some women may experience depressive symptoms during pregnancy, it would classify under a different categorization if those symptoms manifest before childbirth, not fitting the peripartum designation. Likewise, the duration of the depressive episode and hospitalization are not mandatory criteria for this diagnosis, as treatment and severity can vary widely among individuals.