Chapter 24 NAUSEA AND VOMITING DURING PREGNANCY
Nausea and vomiting of pregnancy, also known as morning sickness, is very common, affecting 70% to 85% of pregnant women. It can range in severity from mild nausea to hyperemesis gravidarum. The cause of nausea and vomiting of pregnancy is not known. Risk factors include molar gestation, multiple gestation, family history, or a history of hyperemesis gravidarum in prior pregnancies. Recognition and treatment of milder symptoms can prevent progression of symptoms and hospitalization.
