Pregnancy Induced Hypertension (PIH) is a condition characterized by high blood pressure, protein in the urine, and swelling during pregnancy. The exact cause is unknown, though it is more common in certain at-risk groups. PIH is classified based on symptoms from gestational hypertension with just high blood pressure to preeclampsia with additional symptoms to eclampsia which is the most severe form with seizures. Women at high risk should be monitored closely for symptoms during prenatal visits.