How long after you give birth can pre-eclampsia come back, or is it gone for good the moment you deliver?

Within 1-6 weeks.: 15% of all preeclampsia cases first manifest postpartum i.e. Within 1-6 weeks after delivery. Look out for new/severe headache, nausea/vominting, visual changes or seizures if your blood pressure is increased postpartum and seek prompt medical care if any of these symptoms occur.

6 weeks: Pre-eclampsia can develop or recur any time up to 6 weeks after delivery.