Vomiting in pregnancy
Vomiting and nausea in the early stages of pregnancy are widespread and are most likely to be caused by changes in hormone level. Vomiting arises most commonly in the morning, but it can arise at any time. It is occasionally precipitated by stress, food, or travelling.
In unusual cases, the vomiting becomes prolonged and severe. This condition, known as hyperemesis gravid arum, can cause nutritional deficiency, dehydration, alterations in blood acidity and weight loss. Hyperemesis gravidarum requires emergency medical treatment or hospital admission to replace lost fluids and chemicals by intravenous infusion, to rule out any grave underlying disorder, and to control the vomiting.