This document discusses breast complications that can occur during the postpartum period known as the puerperium. The common complications include breast engorgement, cracked or retracted nipples, mastitis, breast abscesses, and lactation failure. Symptoms, causes, treatment and prevention are described for each complication. Nursing assessments, diagnoses, interventions, and evaluations are also outlined to manage breast issues and support breastfeeding during recovery after childbirth.