Posterior Reversible Encephalopathy Syndrome: Three Ethiopian Hypertensive Patients Presented with Recurrent Seizure: Case Series and Literature Review

BACKGROUND: Posterior Reversible Encephalopathy Syndrome (PRES) is a potentially reversible neurological disorder of acute to subacute onset characterized by headache, nausea and vomiting, visual disturbance, seizure and altered mental status.Neuroimaging findings are characteristic, which allow early diagnosis in the appropriate clinical setting and enable to institute appropriate therapy timely.CASE PRESENTATION: We report 3 adult patients with a history of hypertension presented with recurrent episode of seizure and altered mentation.While all the 3 patients were preliminarily diagnosed with Ischemic stroke, they were subsequently diagnosed with posterior reversible encephalopathy syndrome after neuroimaging revealed the typical features of the syndrome. They were started on antihypertensive and anticonvulsant drugs. On follow-up examination after 3-4 weeks, the patients showed marked clinical and neuro-imaging improvements.CONCLUSION: Posterior reversible encephalopathy syndrome is a rare condition. The presenting clinical symptoms are non-specific and may mimic other neurological disorders. Therefore, early recognition of classic radiographic features is vital to the diagnosis. Timely diagnosis and treatment of this syndrome is important as the treatment outcome is mostly favorable.