Idiopathic intracranial hypertension (IIH), often referred to as pseudotumor cerebri, is a condition that mimics a “false tumor of the brain” due to elevated cerebrospinal fluid pressure. To date, this disorder of increased intracranial pressure (ICP) is of unknown cause. IIH is a sight-threatening condition, making visual loss a truly feared complication.
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Nome et al. (2026) studied this question.
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