Posterior reversible encephalopathy syndrome following appendicitis in a young child: A case report and review of the pediatric literature.

Posterior reversible encephalopathy syndrome is an acute or subacute neurological disorder with variable clinical manifestations including encephalopathy, headache, seizures, visual disturbance, and focal neurologic deficits. Neuroimaging often shows frequently reversible vasogenic edema that predominantly involves the subcortical parieto-occipital lobes. Posterior reversible encephalopathy syndrome has been associated with hypertension and reported in patients with many conditions including eclampsia/pre-eclampsia and immunosuppressive therapy.