Increased intracranial pressure means that the pressure inside the skull is abnormally high, which may cause damage to the brain.
There is normally a small amount of pressure inside the skull. This pressure can become elevated from various conditions. An increased pressure in the skull can put too much pressure on the brain and decrease blood flow to the brain. Increased pressure can also force the brain downward onto the brainstem. This area controls vital functions like breathing, so this is a potentially fatal problem.
The symptoms of increased intracranial pressure may include: · headache · ringing in the ears · nausea and vomiting · vision problems, such as blurry vision or double vision · feeling tired and wanting to sleep · painful eye movements · neck pain · hearing loss · unsteadiness while standing or walking, known as ataxia · weakness, which may occur in only certain parts of the body or throughout the whole body
Increased intracranial pressure may be caused by: · brain tumors · bleeding inside the skull, such as intracerebral hemorrhage · infection inside the skull, such as encephalitis · blood clots, known as hematomas · certain medications · head injury or trauma
There are other causes, and in some cases the cause is not known.
Generally, nothing can be done to prevent the condition.
The healthcare provider will start with a history and physical exam. A cranial CT scan or cranial MRI scan, two special types of x-ray tests, may be taken of the brain and skull. A spinal tap may also be done. This is a procedure in which a needle is inserted through the skin of the lower back and into the spinal column. Fluid can be withdrawn from the spinal column and a pressure reading of the fluid can be taken.
If intracranial pressure is very high, death may occur from brain injury. Some people have mildly elevated intracranial pressure over a long time. These people may develop vision or hearing problems.
Usually, there are no risks to others. Rarely, high intracranial pressure is caused by an infection that may be contagious.
There are many different treatments, depending on the cause and degree of increased pressure present. Treating the underlying cause, if possible, can often return the pressure to normal. Treatment may include putting the person on a ventilator, or artificial breathing machine. Medications, surgery, or repeated spinal taps to remove fluid are other treatment options.
Ventilators may cause infection or lung damage. Medications may have side effects, such as allergic reactions or stomach upset. Surgery and spinal taps carry a risk of bleeding, infection, and even death.
If the underlying cause is corrected and the person feels better, he or she can generally go home with no further treatment. If extensive brain damage has occurred, the person may need intense rehabilitation before going home.
Symptoms and physical examination findings are followed. Sometimes, special instruments are placed through the skin and into the skull to measure the intracranial pressure.