Radiation-induced thyroiditis is a form of painful, acute thyroiditis resulting from radioactive therapy to treat

hyperthyroidism Hyperthyroidism is the condition that occurs due to excessive production of thyroid hormones by the thyroid gland. Thyrotoxicosis is the condition that occurs due to excessive thyroid hormone of any cause and therefore includes hyperthyroidism ...

or from radiation to treat head and neck cancer or lymphoma. It affects 1% of those who have received

radioactive iodine There are 37 known isotopes of iodine (53I) from 108I to 144I; all undergo radioactive decay except 127I, which is stable. Iodine is thus a monoisotopic element. Its longest-lived radioactive isotope, 129I, has a half-life of 15.7 million year ...

(I-131) therapy for

Graves' Disease Graves' disease (german: Morbus Basedow), also known as toxic diffuse goiter, is an autoimmune disease that affects the thyroid. It frequently results in and is the most common cause of hyperthyroidism. It also often results in an enlarged thyr ...

, typically presenting between 5 and 10 days after the procedure. Stored T₃ and T₄ are released as rapid destruction of thyroid tissue occurs which results in pain, tenderness, and exacerbation of hyperthyroidism.

References

{{reflist Cancer treatments Thyroid disease Radiation health effects