It is an increase in the hydrostatic pressure inside the cranial cavity, particularly in the cerebrospinal fluid, due to the sum of pressures exerted by the intracranial elements. Produced by bruises, tumors, abscesses and aneurysms and edema caused by trauma.

Treatment: The position of the patient's head should be assessed on an individual basis, generally it is tilted 30-45 ° above the level of the left atrium to produce improved venous drainage. Hyperventilation also produces a reduction in circulating CO2 pressure in the blood, cellular alkalosis and a consequent vasoconstriction that tends to rapidly reduce intracranial pressure.