Signs of Increased Intracranial Pressure: What They Mean What Exactly Is Intracranial Pressure? The brain is securely enclosed within the skull and cushioned by cerebrospinal fluid (CSF), which also maintains constant internal pressure. When this balance is disturbed—due to bleeding, swelling, or fluid accumulation—pressure rises, threatening brain function. If left untreated, increased intracranial pressure (ICP)… Continue reading Signs of Increased Intracranial Pressure: What They Mean