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Definition of Intracranial

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Intracranial: Within the cranium, the bony dome that houses and protects the brain.

An intracranial hemorrhage is bleeding within the cranium due, for example, to a stroke or leakage of blood from an aneurysm in the brain. The intracranial pressure is the pressure on brain and the cerebrospinal fluid (CSF) within the cranium.

Julius Caesar and his fellow Romans called the skull the "cranium" Today as a rule the "cranium" is taken to be the skull minus the mandible (the jaw bone).

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Reviewed on 12/11/2018

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