OverviewPreeclampsia 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 8/7/2016
Updated by: John D. Jacobson, MD, Professor of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.