In a prospective study of 35 patients with newly diagnosed idiopathic intracranial hypertension confirmed by diagnostic lumbar puncture and treated with standard medication regimens, 43% of patients had excellent headache outcome at 12 months, with the major improvement seen within the first month of diagnosis. Chronic headache was seen in another 43% of patients despite identical treatment, normalization of intracranial pressure, and resolution of papilledema.SOURCE:
Yri HM, et al. The course of headache in idiopathic intracranial hypertension: A 12-month prospective follow-up study. Eur J Neurol 2014;21:1458-1464.