Answer: The correct answer is d) Optic neuritis
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ACEP Now: Vol 43 – No 11 – November 2024Optic neuritis is an inflammation of the optic nerve. The most common form of optic neuritis is an acute idiopathic inflammatory demyelinating optic neuropathy. Optic neuritis is strongly associated with multiple sclerosis and may be the first presenting sign. Optic neuritis is sometimes due to an infectious process involving the orbits or paranasal sinuses.
Patients with idiopathic acute optic neuritis typically present with pain and unilateral visual loss over days without systemic or neurological symptoms. Pain is present in more than 90 percent of cases and often worsens with eye movements. One-third of cases of optic neuritis involve swelling of the optic disc, while most cases have a normal funduscopic examination with retrobulbar optic nerve involvement. As optic neuritis is usually unilateral, an afferent pupillary defect is usually present.
Source: VisualDx. Available at: https://www.visualdx.com/visualdx/diagnosis/optic+neuritis?moduleId=21&diagnosisId=50265
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