Postpartum cerebral angiopathy is a well-recognised subgroup of the reversible vasoconstriction syndromes. Increasingly described is a delay between clinical onset and angiographic changes. We report a patient who presented 19 days postpartum with severe thunderclap headaches, vertigo and a seizure. The clinical syndrome preceded evidence of extensive vasoconstriction on MRA imaging by 15 days; the changes were reversible at 3 months.
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