See pseudotumor cerebri.
idiopathic intracranial hypertensionA neurological disorder characterised by an idiopathic increase in intracranial pressure in the absence of organic disease; it is more common in young women, especially if obese.
Headache, nausea, vomiting, pulsatile tinnitus, double vision and other visual symptoms; with time, swelling of the optic disc and blindness.
Brain scan and a lumbar puncture to exclude organic disease.
Acetazolamide, or surgery to relieve the pressure.