Which of the following is the first-line treatment for hyperthyroidism (Graves' disease)
Question : Which of the following is the first-line treatment for hyperthyroidism (Graves' disease)?
A. Radioactive iodine (131I) therapy
B. Antithyroid drugs (e.g., methimazole)
C. Thyroidectomy
D. Beta-blockers
Answer: B
Explanation: Antithyroid drugs (such as methimazole, propylthiouracil) can inhibit thyroid hormone synthesis, have good efficacy, and are the first-line treatment for Graves' disease, especially in young patients and women of childbearing age. Radioactive iodine therapy and thyroidectomy are used for patients who are ineffective or intolerant to drugs; beta-blockers are used to relieve symptoms (tachycardia, tremor) but do not treat the cause. Thus, the correct answer is B.
