A psychiatric clinical picture revealing moyamoya disease

Moyamoya disease (MMD) is a rare entity. It is a chronic cerebrovascular pathology characterized by stenosis and progressive occlusion of the termination of the carotid arteries. It is of reserved prognosis. Its diagnosis can be evoked on computerized tomography and magnetic resonance imaging (MRI) but is essentially based on arteriography. Its treatment must be early and essentially consists of revascularization surgery. We report the case of a patient admitted to the psychiatric emergency room for management of a behavioral disorder, mutism and auditory and visual hallucination, a cerebral MRI was performed urgently and the diagnosis of MMD was laid. Through this observation and a review of the literature, we discuss the characteristics of this rare condition, in particular the psychiatric comorbidity.