"Physiological elevations of intracranial pressure can occur briefly (e.g. due to coughing, head-down tilt, and neck vein compression). As they are equally distributed throughout the spinal axis and last for a short period of time, they do not cause neurological damage 2."
"The intracranial pressure (ICP) represents the pressure exerted by the essentially incompressible components (brain tissue and interstitial fluids, blood and CSF) contained within the rigid confines of the skull 1-3."