Idiopathic Intracranial Hypertension (IIH)
Raised pressure around the brain with no identifiable cause, often affecting vision.
Overview
Idiopathic intracranial hypertension (IIH) is raised pressure of the fluid around the brain without a tumour or other obvious cause. It most often affects women of childbearing age and is linked with weight gain, though it can affect anyone. Left untreated, the pressure can damage the optic nerves and permanently affect vision. In some patients, narrowing of the large veins that drain the brain (venous sinus stenosis) plays a part — and this can be treated endovascularly.
Symptoms
- Daily headaches, often worse lying down or in the morning
- Brief episodes of blurred or dimmed vision
- Double vision
- A pulsing or whooshing sound in the ears (pulsatile tinnitus)
- Nausea
- Neck or shoulder pain
Treatment options
Treatment aims to lower the pressure and protect your vision. It often starts with medication and weight management, alongside regular eye checks. Where vision is at risk or symptoms don’t improve, and scans show narrowing of the venous sinuses, venous sinus stenting can restore normal drainage through a small puncture in the groin. Shunt surgery to divert fluid is another option. Dr. Hina works with neurologists and ophthalmologists to plan your care.