MIGRAINE ANGIITIS PRECIPITATED BY SEX HEADACHE AND LEADING TO WATERSHED INFARCTION

Vasospasm is a rare cause of cerebrovascular disease except following subarachnoid haemorrhage. We describe a woman who developed an explosi ve-type sex headache, followed by a series of severe migrainous headac hes associated with fully reversible segmental cerebral arterial narro wing and dilatation, resulting in widespread infarction in cerebral ar terial border zones. This led to transient loss of consciousness and m ultiple focal cortical deficits including blindness. She had a past hi story of migraine and a family history of both migraine and sex headac hes. Similar cases have been reported in the literature under a variet y of rubrics. We suggest that this newly recognized clinico-radiologic al syndrome is a migraine variant.