Moyamoya Disease in a 13-Month-Old Middle Eastern Boy.

Moyamoya disease (MMD) is a rare, chronic cerebrovascular disease affecting the cerebral arteries, leading to the development of unique collateral vessels. Few cases were reported from Saudi Arabia; however, the incidence rate is not well-defined. Hence, we present a case of a 13-month-old child who presented to the emergency room with first onset focal seizures with relatively unremarkable past medical and family history.