19th June 2023

Investigations

Investigations for IIH involve assessing complications of raised ICP and ruling out other causes. Investigations include:

• Ophthalmology examination to assess visual acuity, visual fields and fundoscopy
• Blood pressure measurement to rule out malignant hypertension
• Brain imaging within 24hrs of identification of papilloedema with CT/MRI and CT venography to rule out mass lesion, hydrocephalus, or venous thrombosis.
• Lumbar puncture in lateral decubitus position to measure CSF opening pressure and composition.