What is this article about?
Increased intracranial pressure (ICP) can occur as a sign of a brain tumour, as a consequence of infection or maybe even as a subarachnoid haemorrhage from a fall. The skull is filled with brain matter, intravascular blood and cerebrospinal fluid (CSF). A process of auto-regulation allows these components to adjust to each other, which maintains a level ICP. When any of these volumes stop being regulated, pressure builds inside of the skull, resulting in increased ICP.