Nausea and vomiting of pregnancy

Nausea and vomiting of pregnancy is a clinical syndrome ranging from common, mild to moderate symptoms that occur in up to 90% of women to rare, intractable symptoms associated with electrolyte and metabolic disturbances that occur in hyperemesis gravidarum. Although the pathogenesis is poorly understood, the overall prognosis is excellent in women with typical nausea and vomiting in pregnancy. Study results of the prognosis of women with hyperemesis gravidarum are conflicting; the management of these patients can be challenging because of the risk of teratogenicity from medication.