Desensitization to Methimazole

xlomafota13 shared this article with you from Inoreader Desensitization to Methimazole Via radioactive iodine Endocr Pract. 2021 Mar;27(3):185-190. doi: 10.1016/j.eprac.2020.10.019. Epub 2020 Dec 15. ABSTRACT OBJECTIVE: Thionamides (methimazole and propylthiouracil) have been associated with common side effects, such as rash and pruritus, and rare but serious adverse effects, such as agranulocytosis and hepatotoxicity. Methimazole is usually the preferred thionamide for the treatment of hyperthyroidism if the patient is not planning to conceive or not in the first trimester of pregnancy, g iven the less frequent dosing and lower risk of hepatotoxicity. In patients who experience rash or itching when treated with methimazole, switching them to propylthiouracil is one treatment option. Here we report our experience regarding desensitization to methimazole to allow continued treatment with methimazole as an alternative management option. METHODS: We conducted a retrospective chart review of patients at a single institution who had side effects to methimazole and who were desensitized to methimazole under the supervision of an allergist. A total of 7 patients were included who experienced side effects to methimazole that did not include agranulocytosis or hepatotoxicity. RESULTS: All 7 patients were able to take methimazole for treatment of their hyperthyroidism, either for continued medical therapy or as a bridge to definitive therapy, with either surgery or radioactive iodine treatment. CONCLUSION: Under the supervision of an allergist, desensitization to methimazole is an option for treating patients who experience side effects to methimazole (excluding agranulocytosis and hepatotoxicity). PMID:33779553 | DOI:10.1016/j.eprac.2020.10.019 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.