Congenital internal carotid artery hypoplasia in a symptomatic young adult: A case report

Congenital internal carotid artery hypoplasia (CICAH) is a rare vascular anomaly, often asymptomatic due to collateral compensation, which may pose diagnostic challenges, particularly in young adults. We report the case of a 24-year-old woman who presented with headache and diplopia, in whom neuroimaging demonstrated congenital hypoplasia of the right internal carotid artery associated with chronic ischemic changes. This case highlights the uncommon symptomatic presentation of congenital internal carotid artery hypoplasia and underscores the crucial diagnostic role of radiologic imaging in identifying and differentiating it from acquired vascular disease.