Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

URL of this page: //medlineplus.gov/ency/imagepages/17270.htm

Preeclampsia

Preeclampsia

Overview

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 3/17/2026

Updated by: LaQuita Martinez, MD, Department of Obstetrics and Gynecology, Emory Johns Creek Hospital, Alpharetta, GA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.