Posterior reversible encephalopathy syndrome (PRES) with acute intracerebral hemorrhage

Discussion:

Posterior reversible encephalopathy syndrome (PRES) is a neurotoxic state that occurs secondary to the inability of posterior circulation to auto-regulate in response to acute changes in blood pressure. Hyperperfusion with resultant disruption of the blood brain barrier results in vasogenic oedema, but no infarction, most commonly in the parieto-occipital regions. 

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