A 31-year-old woman was evaluated because of headaches.

This young obese normotensive woman presented with a combination of long-standing headaches, visual scotomata, bilateral papilledema, and enlarged blind spots on visual field testing. She was not on contraceptives. Visual acuity was 20/20 OU. Remainder of her neurologic examination was unremarkable. She had a normal brain magnetic resonance imaging (MRI) and normal magnetic resonance venography (MRV). Having excluded hydrocephalus, an intracranial mass, or cerebral venous thrombosis as the etiology of the papilledema, she had a lumbar puncture (LP), which showed elevated opening pressure and normal cerebrospinal fluid (CSF) composition.