Abruption placenta, or placental abruption, is a serious pregnancy complication where the placenta detaches from the uterus before childbirth. This can lead to heavy bleeding and deprives the baby of oxygen and nutrients. Symptoms may include sudden abdominal pain, back pain, and vaginal bleeding. The condition can occur at any stage of pregnancy but is most common in the third trimester. Risk factors include high blood pressure, trauma, and smoking. Early diagnosis and medical intervention are crucial to ensure the safety of both the mother and the baby.