"Intracranial" refers to anything that occurs within the skull or cranium. This term is often used in medical contexts to describe conditions, pressures, or processes that take place inside the head, affecting the brain and surrounding structures. For example, intracranial pressure (ICP) is a critical measurement in assessing brain health, as it can indicate swelling or bleeding. Understanding intracranial conditions is essential for diagnosing and treating various neurological disorders, such as traumatic brain injury or tumors.