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Nausea and vomiting in pregnancy - Background information
What are the associated factors?
- Several factors are associated with the development of nausea and vomiting in pregnancy, the majority of which are not modifiable:
- Increased placental mass (e.g. advanced molar gestation, multiple gestation).
- Female fetus.
- History of nausea and vomiting in previous pregnancies.
- History of motion sickness.
- History of migraines.
- Family history (first-degree relatives) of nausea and vomiting in pregnancy.
- History of nausea with oestrogen-containing oral contraceptives.
- Young maternal age.
- First pregnancy.
- Obesity.
- Stress.
- For more information on potential causal mechanisms, see Causes.
[ACOG, 2004; Davis, 2004; Festin, 2006]
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