vascular
Moyamoya disease
Moyamoya disease is a disease in which certain in the brain are constricted. Blood flow is blocked by constriction and blood clots (). A collateral circulation develops around the blocked to compensate for the blockage, but the collateral vessels are small, weak, and prone to bleeding, , and thrombosis. On a conventional angiography, these collateral vessels have the appearance of a "puff of smoke", described as moyamoya (もやもや) in Japanese.
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Symptoms — what it feels like
- ·Headache; ; weakness; numbness or in the face, arm or leg, typically on one side of your body; visual disturbances; aphasia, or developmental delays, involuntary movements
How it's found
- ·Magnetic resonance (MRI), computerized tomography (CT) scan, angiogram, positron emission tomography (PET) scan or single-photon emission computerized tomography (SPECT), electroencephalogram (EEG), transcranial Doppler
Complications
- ·Permanent damage to the brain, , , vision problems, speech problems, movement disorders, and developmental delays
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