What are the kinds of tests used for idiopathic intracranial hypertension?

Spinal tap: The neurologic exam and the history obtained by the neurologist are the starting point. Examination of the eyes and the fundi of the eye can give information about whether or not there is pressure transmitted to the optic apparatus. Ct scans or mris rule out any mass lesion or obstructive hydrocephalus.A spinal tap is done to document the CSF pressure and if there is any relief with removal of csf.