A Case of Cerebral Infarction Provoked by Carbon Monoxide Poisoning in Probable Unilateral Moyamoya Disease

Moyamoya disease (MMD) is a progressive cerebrovascular disease of unknown origin and characterized by progressive occlusion of the terminal portion of the internal carotid and proximal cerebral arteries with the development of typical extensive basal collateral network. Major clinical manifestations include repeated ischemic or hemorrhagic strokes and epileptic seizures. It is known that hemodynamic reserve is reduced in MMD, especially in ischemia related symptoms. This condition could account for increased potential for susceptibility to cerebral ischemia-hypoxia. Recently, we experienced a case of acute cerebral infarction in a patient with probable unilateral MMD that was provoked by carbon monoxide (CO) poisoning.