Overview

What Is Moyamoya Disease?

Moyamoya disease is a rare cerebrovascular disorder that affects the basal ganglia, an area at the base of the brain, where arteries become blocked.

This progressive disease literally means “puff of smoke” in Japanese. This illustrates the look of the tangled blood vessels that form to compensate for the blockage.

First discovered in Japan in the 1960s, it has been found in the United States, Europe, Africa and Australia, and it primarily affects children, although it can occur in adults.

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