Focal Seizure Status Caused by a Cerebral Hyperperfusion Syndrome after Carotid Endarterectomy

The cerebral hyperperfusion syndrome is a rare complication after revascularisation procedures of the carotid artery. It is typically presenting hours to few days after the intervention with headache, seizures and/or neurological focal symptoms. Severe complications include brain oedema or intracranial haemorrhage. We present a 74-year-old female patient who developed a cerebral hyperperfusion syndrome presenting with a status of focal motor seizures of her left arm after carotid endarterectomy of an 80 % clinically asymptomatic stenosis with a coexisting contralateral 80 % asymptomatic stenosis of the internal carotid artery.