Moyamoya Disease
Moyamoya disease is a rare, progressive condition in which the arteries at the base of the brain narrow over time, reducing blood flow. The brain responds by forming a network of small, fragile vessels to compensate — which, on imaging, resembles a faint “puff of smoke,” the meaning of the Japanese word moyamoya.
Signs & Symptoms
- Recurrent, brief episodes resembling a mini-stroke
- Weakness or numbness on one side of the body
- Headaches
- Seizures or vision problems, particularly in children with the condition
Causes & Risk Factors
The exact cause is unknown, though genetics appear to play a role. It’s more common in people of East Asian descent and in children.
Diagnosis
Diagnosis is made with imaging of the brain’s blood vessels, such as an MRI/MRA or a cerebral angiogram.
Treatment Options
Treatment often involves surgery to improve blood flow to the brain, along with medication to help reduce the risk of stroke.
This information is for general education and isn’t a diagnosis or medical advice. To find out what’s right for you, request an appointment or call 810-262-7030.