Medical therapy of benign thyroid diseases.

Main guide-lines of medical therapy of benign thyroid diseases are reviewed. The most common drug therapy of the various forms of hyperthyroidism is represented by thionamide drugs (methimazole and propylthiouracil). Therapeutic protocols are diversified according to the disease. In Graves'disease medical therapy may present the definitive treatment, leading to remission in little less than 50% of cases while in hyperfunctioning nodular thyroid diseases, medical therapy is merely in preparation for ablation therapy. Other drugs used in hyperthyroidism are also mentioned (inorganic iodine, potassium perchlorate, beta-blockers). Thyroxine replacement therapy in the various forms of hypothyroidism is then analyzed, discussing in particular the therapeutic protocols and follow-up of the various forms of hypothyroidism. Finally, the controversy about the indications and efficacy of TSH-suppressive thyroxine therapy is considered.