Posterior reversible encephalopathy Syndrome (PRES), is a reversible syndrome of headache altered sensorium, seizures, loss of vision and often associated with hypertension. Preeclampsia and eclampsia are among the most common causes of PRES. Early recognition and treatment of this syndrome is important to prevent permanent neurological sequelae. Neuroimaging shows, bilateral symmetrical subcortical edema in occipitoparietal region. Treatment is primarily supportive and involves correction of underlying cause.