Benign intracranial hypertension definition - medical term
Increased pressure within the brain
in the absence of a tumor. Symptoms may include headache, nausea, vomiting, pulsating
intracranial noises, singing in the ears, double vision, loss of visual accuracy,
and even blindness. It is most common in women between the ages of 20 and 50. The
cause is usually not known. The condition is associated sometimes with the use of
tetracycline, nalidixic acid , nitrofurantoin, phenytoin, lithium, and amiodarone,
and the overuse of vitamin A. Diagnosis is by brain imaging and lumbar puncture.
Drugs to reduce cerebrospinal fluid production or hyperosmotic drugs may be used
to reduce fluid buildup. Excess cerebrospinal fluid may be removed by repeated spinal
taps, shunting or a type of surgery called optic nerve sheath fenestration that
allows the excess fluid to escape. Steroids may be prescribed to reduce swelling
of brain tissue. Benign intracranial hypertension is also called pseudotumor cerebri.
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