USMLE Step 1 Quiz
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PHARMACOLOGY
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A 32-year-old woman with bipolar II disorder is started on a mood stabilizer. The dose is titrated slowly over several weeks. However, three weeks into treatment, she develops a fever, sore throat, and a diffuse, targetoid rash on her trunk, face, and palms. She is hospitalized with a diagnosis of Stevens-Johnson syndrome.
Which of the following medications, which acts by inhibiting voltage-gated sodium channels, is most likely responsible for this life-threatening dermatologic reaction?
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