Idiopathic intracranial hypertension: An old disease getting new attention

Idiopathic intracranial hypertension (IIH)^1,2 has come under increased clinical scrutiny in the last 2 decades. This neurologic disorder is characterized by increased intracranial pressure of unknown origin, and while it was once considered rare, the opposite now may indeed be true, based on the increasing numbers of IIH cases being diagnosed.