Pre-eclampsia rarely happens before the 20th week of pregnancy. Most cases occur after 24 to 26 weeks, and usually towards the end of pregnancy.


Pre-eclampsia is a condition that causes high blood pressure during pregnancy and after labour. It can be serious if not treated.


Early signs of pre-eclampsia include high blood pressure and protein in your pee. These are usually picked up during pregnancy appointments.


If you have pre-eclampsia you'll have regular check-ups that may require a stay in hospital. You may also need medicine to lower your blood pressure.

Page last reviewed: 07/06/2018
Next review due: 07/06/2021