<unk>  <unk>  is the pressure exerted by fluids such as cerebrospinal fluid (CSF) inside the skull and on the brain tissue.<unk>  is measured in millimeters of mercury (mmHg) and at rest, is normally 7–15 mmHg for a supine adult. The body has various mechanisms by which it keeps the<unk>  stable, with CSF pressures varying by about 1 mmHg in normal adults through shifts in production and absorption of CSF. Changes in<unk>  are attributed to volume changes in one or more of the constituents contained in the cranium. CSF pressure has been shown to be influenced by abrupt changes in intrathoracic pressure during coughing (which is induced by contraction of the diaphragm and abdominal wall muscles, the latter of which also increases intra-abdominal pressure), the valsalva maneuver, and communication with the vasculature (venous and arterial systems).<unk>  hypertension (IH), also called increased<unk>  (IICP) or raised<unk>  (RICP), is elevation of the pressure in the cranium.<unk>  is normally 7–15 mm Hg; at 20–25 mm Hg, the upper limit of normal, treatment to reduce<unk>  may be needed.
Intracranial pressure
Cerebral perfusion pressure
Cerebral autoregulation
Mean arterial pressure
Intraocular pressure
Blood volume
Segmental blood pressure
Blood pressure