Hyperemesis gravidarum overview
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Hyperemesis gravidarum (from Greek hyper and Latin emesis and gravida; meaning "excessive vomiting of pregnant women") is a severe form of morning sickness, with unrelenting, excessive pregnancy-related nausea and/or vomiting that prevents adequate intake of food and fluids. Hyperemesis is considered a rare complication of pregnancy but, because nausea and vomiting during pregnancy exist on a continuum, there is no clear boundary between common morning sickness and hyperemesis. Estimates of the percentage of pregnant women afflicted range from 0.3% to 2%.