An interesting article summarizing the biological changes in the brain after childbirth. They site damage to the amygdala as a possible cause of postpartum depression and acute anxiety. It would be interesting to know the causes of amygdala damage in mothers suffering postpartum such as history of trauma.

What Happens to a Woman’s Brain When She Becomes a Mother

http://www.theatlantic.com/health/archive/2015/01/what-happens-to-a-womans-brain-when-she-becomes-a-mother/384179/