Factors Associated with the Presentation of Moyamoya in Childhood

Most children with moyamoya in this series had an underlying predisposing condition, compared with other US series, where almost half had no predisposing condition identified. In this series, fewer children (48% versus 68%) presented with stroke, many (70% versus 43%) had a history of TIAs, and many (52% versus 22%) had a history of headaches than in previous reports. In addition, the Native American population may be at higher risk of moyamoya than previously recognized.