Preeclampsia: Understanding the Symptoms, Causes, and Prevention Preeclampsia is a pregnancy-related condition that affects approximately 5-8% of pregnant women worldwide. This condition usually occurs after the 20th week of pregnancy, and if not treated, it can cause serious problems such as preterm birth and even death. Preeclampsia is characterized by PRotEinuria Elevated blood pressure (140/90)Changes in vision (blurriness or being sensitive to light)Legs, hands, or face edemaAbdominal painM