New-onset seizure activity in a transplant patient on immunosuppressive therapy.

The evaluation of new-onset seizure activity must raise a much broader differential than just epilepsy. This case study highlights that broad differential and identifies an important, but less common, cause of seizure activity in specific patient populations. Information is summarized from recent primary research, case series, literature reviews, and meta-analyses. In the appropriate clinical context, the diagnosis of posterior reversible encephalopathy syndrome (PRES) should be considered as a cause of seizures. Posterior reversible encephalopathy syndrome is a neurotoxic syndrome characterized by posterior cerebral edema on imaging and triggered by a variety of inciting or predisposing factors. This article reviews suggestions for the identification and management of PRES. Because of the myriad factors, nurse practitioners should be familiar with PRES and may encounter it through primary care, emergency or urgent care, hospitalist medicine, or a variety of specialty roles.