Pregnancy and Postpartum Depression (PPD) is a mood disorder that can begin during pregnancy or in the first three weeks after having a baby. Symptoms can range from mild sadness, trouble concentrating, or difficulty finding joy in once-loved activities to severe depression, and mothers with pre-existing depression prior to or during pregnancy. There is no single cause for PPD, but experts attribute it to the drop in hormones estrogen and progesterone following childbirth and general stressors which increase during pregnancy and the postpartum period. With proper mental health care, PPD is treatable and the risk of severe depression can also be prevented.