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  • Title: Expanding the clinical spectrum of idiopathic intracranial hypertension.
    Author: Chen BS, Britton JOT.
    Journal: Curr Opin Neurol; 2023 Feb 01; 36(1):43-50. PubMed ID: 36444979.
    Abstract:
    PURPOSE OF REVIEW: Idiopathic intracranial hypertension (IIH) is a disorder of raised intracranial pressure (ICP). Although the majority of patients with IIH present classically with headache and papilledema, some patients may have unusual presentations or manifestations. Recent advancements in neuroimaging have facilitated the identification of other presentations associated with IIH. This review provides an overview of the expanding clinical spectrum of IIH. RECENT FINDINGS: Presentations of IIH that are considered unusual include highly asymmetric or unilateral papilledema, IIH without papilledema, and IIH associated with cranial nerve involvement. These presentations likely reflect differences in the way cerebrospinal fluid (CSF) pressure is transmitted intracranially. Radiological signs of intracranial hypertension are increasingly recognized in patients with IIH and provide further insights into the effects of raised ICP on intracranial structures. Osseous changes in the skull base leading to formation of meningoceles and encephaloceles have been identified in patients with IIH, spontaneous skull base CSF leak, and drug-resistant temporal lobe epilepsy, suggesting a possible association. SUMMARY: Clinicians should be familiar with the expanding clinical spectrum of IIH and the implications for the management of these presentations.
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