Preeclampsia is a pregnancy complication characterized by high blood pressure and signs of damage to another organ system, most often the liver and kidneys. Preeclampsia usually begins after 20 weeks of pregnancy in women whose blood pressure had been normal.

How early can you have pre eclampsia?

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. Although less common, the condition can also develop for the first time in the first 6 weeks after birth.

What is the main cause of preeclampsia?

The exact cause of preeclampsia is not known. It's thought to be improper functioning of the placenta including insufficient blood flow to the placenta. Other factors that may increase risk include: high fat and poor nutrition; immune function disorders; genetic issues or a family history.