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Idiopathic Intracranial Hypertension: Updates on Pathophysiology and Diagnosis
Davide Palombi1, Jacopo Ciccani1, Luca Massimi1,2
1Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Advances and Technical Standards in Neurosurgery
|July 2, 2026
Summary
Idiopathic intracranial hypertension (IIH), a condition of elevated intracranial pressure (ICP), affects young women and can cause vision loss. Recent advances improve diagnosis and treatment, but challenges remain in standardization.
Area of Science:
- Neurology
- Ophthalmology
- Nephrology
Background:
- Idiopathic intracranial hypertension (IIH), or pseudotumor cerebri, is a neurological disorder causing elevated intracranial pressure (ICP) without a clear structural cause.
- It predominantly affects young, obese women, linking it to metabolic and hormonal factors.
- Symptoms include headaches, visual disturbances, and papilledema, potentially leading to irreversible vision loss if untreated.
Purpose of the Study:
- To review recent advancements in understanding the pathophysiology, diagnosis, and treatment of IIH.
- To highlight emerging diagnostic tools and therapeutic strategies for managing this complex neurological condition.
- To underscore persistent challenges and advocate for a multidisciplinary approach in IIH diagnosis and care.
Main Methods:
- Review of current literature on IIH pathophysiology, including venous hypertension, glymphatic dysfunction, and CSF dynamics.
- Analysis of diagnostic advancements, incorporating neuro-ophthalmological exams, lumbar puncture, MRI, MRV, and OCT.
- Evaluation of emerging non-invasive monitoring techniques like ultrasound and machine learning for ICP estimation.
Main Results:
- Pathophysiology involves complex interactions including transverse sinus stenosis, glymphatic system dysfunction, and obesity-related hormonal influences.
- Diagnostic tools like MRI, MRV, and OCT aid in identifying key IIH markers.
- Innovative treatments such as venous sinus stenting and GLP-1 pathway modulation show promise for refractory cases.
Conclusions:
- Significant progress has been made in IIH diagnostics and therapeutics, with emerging non-invasive methods and targeted pharmacological interventions.
- Despite advances, standardization of diagnostic criteria and treatment protocols remains a challenge.
- Future research should focus on hybrid diagnostic strategies and artificial intelligence for enhanced monitoring and personalized treatment of IIH.
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