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How is IIH diagnosed?

This illustration shows bilateral venous sinus narrowing (red circles). As a result of the bilateral narrowing, the blood flow from the brain to the neck is compromised, contributing to intracranial hypertension and the symptoms of pseudotumor cerebri.

Pseudotumor cerebri is largely a diagnosis of exclusion – if a patient has high intracranial pressure and testing does not reveal any cause, the diagnosis will be idiopathic intracranial hypertension (IIH), also known as pseudotumor cerebri. (Read more about Diagnosing and Treating Pseudotumor Cerebri.)

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