brain AE brain herniation AE true WEB: http://www.nlm.nih.gov/medlineplus/ency/article/001421.htm Idiopathic Brain Herniation a brain disorder AE that results in brain tissue, cerebrospinal fluid, and blood vessels being moved or pressed away from their usual position inside the skull. https://www.ncbi.nlm.nih.gov/pubmed/25260205 SJ, YH 10006126