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Nausea and vomiting in pregnancy - Background information
How common is it?
- A UK prospective study of nausea and vomiting during pregnancy found that of the 266 pregnant women studied [Gadsby et al, 1993]:
- Around half had both nausea and vomiting.
- Nausea without vomiting was experienced by 28%.
- The incidence of hyperemesis gravidarum is around 0.5–2% of pregnancies. Figures vary because of different diagnostic criteria and ethnic variation in study populations [ACOG, 2004].
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