This condition has a higher incidence in Japan, but may be found in all nationalities. These are the most typical symptoms. Seizures Involuntary movement disorders Intracranial hemorrhage. Ischemic symptoms, such as those in children may also occur.
Cerebral angiography is the primary method to establish the diagnosis of moyamoya disease.
Because of either limited experience or lack of success, there is little information regarding medical therapies for moyamoya disease. Selected patients suffering from recurrent or progressive focal cerebral ischemic events may require surgical treatment aimed at revascularizing ischemic brain.