Table 1:

Revised modified Dandy criteria^a

Criteria
1) If symptoms or signs are present, they may only reflect those of generalized intracranial hypertension or papilledema
2) Documented elevated intracranial pressure measured in the lateral decubitus position
3) Normal CSF composition
4) No evidence of hydrocephalus, mass, structural, or vascular lesion on MRI or contrast-enhanced CT for typical patients, and MRI and MR venography for all others
5) No other cause of intracranial hypertension identified

^aAll of the above criteria should be met in order to make the diagnosis of IIH.