Myasthenia gravis is the correct answer. Answers a, b, and c might be considered in the differential diagnosis. However, because of its specificity, testing for autoantibodies against the acetylcholine receptor antibodies should be performed on all patients with suspected myasthenia gravis. Demonstration of binding antibodies, possible in up to 90% of patients with the generalized disease, provides the laboratory confirmation of myasthenia gravis.
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Cite this: Raghav Govindarajan. Skill Checkup: A 57-Year-Old Woman With Dyspnea, Droopy Right Eye, and Mild Crackles at Both Lower Lung Fields - Medscape - May 06, 2022.