{Reference Type}: Case Reports {Title}: An Unexpected Case of Posterior Reversible Encephalopathy Syndrome. {Author}: Baig H;Ashraf MH;Ashraf MA;Khan MA;Mohamed Nazeer MN; {Journal}: Cureus {Volume}: 12 {Issue}: 8 {Year}: Aug 2020 30 暂无{DOI}: 10.7759/cureus.10129 {Abstract}: This study presents an 86-year-old gentleman who was admitted under the acute stroke team for a possible posterior cerebral infarct. Radiologic imaging revealed that the diagnosis was in fact posterior reversible encephalopathy syndrome (PRES). Through a process of elimination by means of investigations, the most likely cause was found to be mild hypertension on a background of vascular dementia causing a possible exacerbation of PRES symptoms. A multidisciplinary approach was found to be beneficial, providing safe and effective care for this patient, allowing a brief recovery period and restoration of baseline function and thus minimising permanent sequelae.