Idiopathic intracranial hypertension

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Summary of Idiopathic intracranial hypertension

Idiopathic intracranial hypertension, or pseudotumor cerebri, is a neurological disorder that is characterized by increased intracranial pressure in the absence of a tumor or other etiology seen on imaging. Symptoms include headache, pulsatile tinnitus, and visual symptoms such as diplopia. If untreated, it may lead to swelling of the optic disc that can be seen as papilledema on fundoscopy, which can progress to vision loss. Diagnosis is via elevated opening pressure on lumbar puncture.

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Idiopathic intracranial hypertension

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Idiopathic intracranial hypertension

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Untreated idiopathic intracranial hypertension may cause bilateral swelling of the optic discs, which can be seen as on fundoscopy.

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USMLE® Step 1 style questions USMLE

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A 27-year-old woman comes to your office because of daily headaches for the past week. She says the headaches last 5-30 minutes, are an 8 on a 10-point scale, and accompanied by nausea, vomiting, and transient visual obscurations. Physical examination shows a BMI of 35 kg/m2. Eye examination shows papilledema. Lumbar puncture shows an opening pressure of 275 mm H2O, but no cytological or chemical abnormalities. MRI shows no abnormalities. Which of the following is the most likely diagnosis?

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