Moyamoya disease pathophysiology

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Vishnu Vardhan Serla M.B.B.S. [2]

Pathophysiology

The constrictions of the arteries in moyamoya disease are unlike the constrictions in atherosclerosis. In atherosclerosis, the inner layer (lumen) of the arteries suffers an immune reaction, fills with inflammatory cells, and accumulates fatty cells and debris. In moyamoya, the inner layer of the carotid artery overgrows inward to constrict the artery, and the artery also fills with blood clots, which cause strokes.