Posterior reversible encephalopathy syndrome (PRES) is a rare neurological disorder characterized by headaches, visual disturbances, altered level of consciousness, seizures, and a variety of neurological deficits that are caused by a severe increase in blood pressure. Hypertensive disorders of pregnancy, mainly preeclampsia and eclampsia, continue to be one of the main causes of morbidity and mortality during pregnancy worldwide, causing neurological complications ranging from singular seizures to the development of status epilepticus and the advent of potentially fatal cerebrovascular events. We describe the presentation of posterior reversible encephalopathy syndrome in a pregnant adolescent who developed a hypertensive disorder of pregnancy.