[Historical Review and Perspective on the Diagnostic Criteria of Moyamoya Disease].

We reviewed the historical aspects of the diagnostic criteria for moyamoya disease since 1978. Based on novel knowledge of moyamoya disease, the diagnostic criteria have been revised in 1988, 1995, 2009, 2015, and 2021. The most recent diagnostic criteria emphasize the importance of arterial shrinkage, which can be observed in moyamoya disease, and have also reorganized the critical comorbid disorders of quasi-moyamoya disease(moyamoya syndrome). We also discussed the future perspectives on the diagnosis of moyamoya disease.