A potentially dangerous pregnancy complication characterised by high blood pressure.
Pre-eclampsia usually begins after 20 weeks of pregnancy in a woman whose blood pressure had been normal. It can lead to serious, even fatal, complications for both mother and baby.
There may be no symptoms. High blood pressure and protein in the urine are key features. There may also be swelling in the legs and water retention, but this can be hard to distinguish from normal pregnancy.
Pre-eclampsia can often be managed with oral or IV medication until the baby is sufficiently mature to be delivered. This often requires weighing the risks of early delivery versus the risks of continued pre-eclampsia symptoms.