Demyelinating Diseases USMLE Step 1 Practice Question
A 34-year-old woman presents with acute vision loss in her left eye and retro-orbital pain on eye movement. Vital signs: BP 118/76, HR 88, RR 16, Temp 37.2°C, SpO2 98%. Examination reveals a relative afferent pupillary defect and impaired color discrimination. Brain MRI demonstrates multiple periventricular T2 hyperintensities. Visual evoked potentials show delayed latency. She denies fever or recent infections. Which of the following is the most likely diagnosis?
Answer choices
- AAcute ischemic stroke
- BSarcoidosis
- CLeber hereditary optic neuropathy
- DMultiple sclerosisCorrect answer
- ENeuromyelitis optica spectrum disorder
- FAutoimmune myasthenia gravis
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