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There are three treatments for hyperthyroidism. Antithyroid medicine and radioactive iodine are the ones doctors use most often. In rare cases, surgery may be done. Hyperthyroidism can lead to more serious problems. So even if your symptoms are not bothering you, you still need treatment.
The kind of treatment you have depends on your age, what is causing your hyperthyroidism, how much thyroid hormone your body is making, and other medical conditions you may have. Each kind of treatment has benefits and risks. Discuss the benefits and risks of each kind of treatment with your doctor. For some people, more than one kind of treatment may be needed.
Initial treatment for hyperthyroidism usually is antithyroid medicine or radioactive iodine therapy. If you have a lot of symptoms, your doctor may recommend you take antithyroid medicine first to help you feel better. Then you can decide whether to have radioactive iodine therapy.
If you have symptoms such as a fast heartbeat, tremors, sweating, nervousness, or dry eyes, you may take some additional medicines to treat those symptoms.
Surgery is not usually part of initial treatment. You may need surgery if your thyroid gland is so big that you have a hard time swallowing or breathing. Or you may need surgery if a single large thyroid nodule is releasing too much thyroid hormone.
During and after treatment for hyperthyroidism, you will have regular blood tests to check your levels of thyroid-stimulating hormone (TSH). You will also have regular thyroid hormone tests to check your levels of hormones called T4 and T3. These tests are a good way to know how well your treatment is working. If your symptoms do not go away after your initial treatment, you may need to repeat the treatment or try a different treatment.
Sometimes treatment cures your hyperthyroidism but may cause hypothyroidism. Hypothyroidism is the opposite of hyperthyroidism—instead of making too much thyroid hormone, your body is now making too little thyroid hormone. Hypothyroidism is most common after treatment with radioactive iodine. But it can also occur after surgery and sometimes after taking antithyroid medicine.
Be sure to call your doctor if you start to gain weight, feel tired, or feel cold more often than usual. These symptoms may mean you have hypothyroidism and you need to take a different medicine called thyroid hormone medicine. For more information, see the topic Hypothyroidism.
Treatment if the condition gets worse
After treatment with radioactive iodine, you may develop hypothyroidism (too little thyroid hormone). Call your doctor if you have any of the symptoms of hypothyroidism such as gaining weight, feeling tired, or feeling cold more often than usual. If you do have hypothyroidism, you may need to take thyroid hormone medicine for the rest of your life. For more information, see the topic Hypothyroidism.
eMedicineHealth Medical Reference from Healthwise
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