neurologic disorders
Idiopathic Intracranial Hypertension
Diagnosis of Idiopathic Intracranial Hypertension
MRI with magnetic resonance venography Lumbar puncture If clinical findings suggest idiopathic intracranial hypertension, clinicians should check visual fields and optic fundi, even in patients with no visual symptoms. Diagnosis of idiopathic intracranial hypertension is suspected clinically and established by brain imaging (preferably MRI with magnetic resonance venography) that has normal results (except for narrowing of the venous transverse sinus). If not contraindicated, lumbar puncture with cerebrospinal fluid (CSF) testing is then done. Elevated opening pressure and normal CSF composition suggests idiopathic intracranial hypertension. Use of certain medications and certain disorders can produce a clinical picture resembling idiopathic intracranial hypertension and should be excluded (see table Conditions Associated With Papilledema and Resembling Idiopathic Intracranial Hypertension ). 