Preeclampsia is the development of swelling, elevated blood pressure, sudden and rapid weight gain and protein in the urine during pregnancy. The exact cause is unknown, but it occurs in approximately 5% of the population.
Review Date 12/2/2020
Updated by: LaQuita Martinez, MD, Department of Obstetrics and Gynecology, Emory Johns Creek Hospital, Alpharetta, GA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.