This chapter provides detail description of pre-eclampsia. Hypertension in pregnancy, recording blood pressure in pregnancy, classification of hypertensive disorders, definition of preeclampsia, management of preeclampsia and gestational hypertension, HELLP syndrome, fetal surveillance, thromboprophylaxis, postpartum hypertension, prophylactic therapies are described in detail. 6 tables are added to highlight classification of hypertensive disorders in pregnancy, diagnosis of preeclampsia, risk factors for preeclampsia, indications for delivery and drugs used for prevention. 7 references are included at the end of the chapter to facilitate further reading.