*The authors contributed equally to this manuscript. The authors have no conflicts of interest to declare.
Iodine-Induced Thyrotoxicosis After Ingestion of Kelp-Containing Tea
Article first published online: 31 MAY 2006
Journal of General Internal Medicine
Volume 21, Issue 6, pages C11–C14, June 2006
How to Cite
Müssig, K., Thamer, C., Bares, R., Lipp, H.-P., Häring, H.-U. and Gallwitz, B. (2006), Iodine-Induced Thyrotoxicosis After Ingestion of Kelp-Containing Tea. Journal of General Internal Medicine, 21: C11–C14. doi: 10.1111/j.1525-1497.2006.00416.x
- Issue published online: 31 MAY 2006
- Article first published online: 31 MAY 2006
- Manuscript received September 9, 2005Initial editorial decision November 11, 2005Final acceptance January 9, 2006
- iodine-induced hyperthyroidism;
Complementary medication is en vogue and an increasing number of patients consume herbal medicine without reporting their use to physicians. We report a case of iodine-induced hyperthyroidism due to the ingestion of a kelp-containing tea. A 39-year-old woman with multinodular goiter presented with typical signs of hyperthyroidism, which was confirmed by endocrine tests. She was not exposed to iodinated radiocontrast media and did not take medications containing iodine, such as amiodarone. However, a detailed medical history revealed that she had been treated for a period of 4 weeks by a Chinese alternative practitioner with a herbal tea containing kelp because of her enlarged thyroid. The consumption of the tea was discontinued and an antithyroid drug therapy was initiated.
Physicians should advise patients with underlying thyroid disease to avoid all complementary or alternative medications containing iodine.