Hypertensive disorders of pregnancy (HDP) is a spectrum of disorders complicating pregnancy, adversely affecting the mother as well as the fetus. Various classification systems have been suggested over the period of time, and the term “pregnancy-induced hypertension” has been discarded. Due to lack of uniformity in the classification system, there had been difficulties in studying various aspects of this disease spectrum, their pathophysiology, maternal and fetal outcomes, prevention and management, and long-term sequelae.