This chapter on posttraumatic stress disorder (PTSD) in the postpartum reviews the disorder that may occur following: a traumatic birth during which the mother is injured: postpartum medical problems such as hemorrhage or the occurrence of a defect or medical complications in the newborn. Symptoms of PTSD include nightmares, intrusive thoughts, flashbacks, hypervigilance, avoidance of triggers, depressed mood, and a pessimistic view of the future. It is important to screen for PTSD after a traumatic birth as women often hesitate to come forward as they feel ashamed, lack insight into symptoms, lack support, or fear reproach. It is essential to attend to any residual physical trauma or pain following the delivery. Cognitive-behavioral therapy is the treatment of choice. Medication may be helpful including selective serotonin reuptake inhibitors and prazosin to help educe nightmares.