Posterior reversible encephalopathy syndrome

A57-year-old man presented to the medical admissions unit of the authors' hospital with headache and blurred vision. His blood pressure recorded at the time of admission was 234/124 mmHg. Fundoscopy revealed early papilloedema and laboratory examination revealed raised levels of serum creatinine and urinary proteins. The patient reported a similar episode of headache and blurred vision 6 weeks before admission.