Sometimes treatment cures your hyperthyroidism but may
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
Treatment if the condition gets worse
radioactive iodine or
antithyroid medicines are not working
well, you may need:
- Another treatment of radioactive
- Surgery to remove all or part of your thyroid gland (thyroidectomy).
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