Pregnancy presents a vulnerable period for depressive episodes before, during, and after childbirth. As early as 700 BC, Hippocrates described women having emotional difficulties after giving birth, a problem that came to be termed "the baby blues" and, eventually, "postpartum depression." Symptoms include depressed mood, lack of interest, weight changes, feelings of guilt and worthlessness, difficulty in concentration, and suicidal thoughts. Although the concept became increasingly recognized over the centuries, it was not until 1994 that the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) included the postpartum onset of depression as a formally, medically defined concept in the United States. 1 Today, it is recognized that pregnancy and perinatal depression [postpartum depression (PPD)] may be a more accurate term as the phenomenon can occur at any time surrounding pregnancy and delivery, not just postpartum. The new PPD definition in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-V) specifies the phenomenon as depression "with perinatal onset" if the onset of mood symptoms occurs during the pregnancy or in the 4 weeks after delivery. 2 Still, the definition may fail to capture appropriate cases because women can experience PPD up to 12 months after giving birth. Generalizing the phenomenon into one category may ignore the distinct needs of women who experience depression in the antepartum versus postpartum periods. 3 Childbirth experiences can affect the risk for PPD. As part of the childbirth experience, labor analgesia and anesthesia can influence childbirth experiences of pain and suffering. Childbirth is one of the most painful experiences that a woman will encounter in her lifetime. There is a growing body of research on the influence of analgesia on PPD risk during this vulnerable period, as it may have protective, neutral, or harmful effects on individuals. This review will summarize the epidemiology of PPD, its natural history, comorbidities, and treatments, and will appraise existing knowledge on the relative contributions of pain, suffering, and analgesia to overall PPD risk.