Reversible posterior encephalopathy syndrome due to intravenous immunoglobulin in a child with Guillain-Barré syndrome

Reversible posterior leukoencephalopathy syndrome is characterized clinically by headache, abnormalities of mental status, and visual perception and seizures. We report a rare case of acute encephalopathy following intravenous immunoglobulin treatment for Guillain-Barré syndrome in whom posterior reversible encephalopathy syndrome developed without severe hypertension.