6 doctors weighed in:
Can an underactive thyriod become overactive after being burnt out with radioactive iodine 12 years earlier?
6 doctors weighed in

Dr. James Chu
Internal Medicine - Endocrinology
4 doctors agree
In brief: Yes, but uncommon
Some patients with graves' disease, and others with overactive thyroid nodules will undergo radioactive i-131 therapy to control thyroid levels.
Usually, the thyroid hormone levels go low as the near-entire thyroid gland is destroyed. In a minority of cases, the underlying autoimmune stimulation of graves' will cause a small remnant to slowly grow back, and eventually cause overactivity again.

In brief: Yes, but uncommon
Some patients with graves' disease, and others with overactive thyroid nodules will undergo radioactive i-131 therapy to control thyroid levels.
Usually, the thyroid hormone levels go low as the near-entire thyroid gland is destroyed. In a minority of cases, the underlying autoimmune stimulation of graves' will cause a small remnant to slowly grow back, and eventually cause overactivity again.
Dr. James Chu
Dr. James Chu
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Dr. Stanley Schwartz
Internal Medicine - Endocrinology
In brief: Rarely !!!!!
Look for other causes of symptoms your blaming on overactive thyroid.

In brief: Rarely !!!!!
Look for other causes of symptoms your blaming on overactive thyroid.
Dr. Stanley Schwartz
Dr. Stanley Schwartz
Thank
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