Abstract
Idiopathic Intracranial Hypertension (IIH) is a condition characterized by elevated intracranial pressure of unknown cause. Classic symptoms include headache, vision loss, transient visual obscurations (TVOs), diplopia (often from sixth nerve palsy), divergence insufficiency, and pulsatile tinnitus. However, atypical presentations can occur, including asymmetric or unilateral papilledema, oculomotor disturbances such as third and fourth nerve palsies, internuclear ophthalmoplegia, and olfactory dysfunction, among others. Fulminant IIH is a subtype of IIH defined as acute onset of rapid worsening of vision over days (less than 4 weeks between symptom onset and severe vision loss). This case report details a rare presentation of fulminant IIH with unilateral complete third nerve palsy.
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