Iodine-induced hyperthyroidism in a patient with a normal thyroid gland

Postgraduate Medical JournalPublished 1 July 1986Open access

Shmuel Shilo, Harry J. Hirsch

DOI10.1136/pgmj.62.729.661

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Citations55

SJR quartileQ2

SJR score0.79

SNIP1.05

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TL;DR

A 72 year old female who developed clinical and laboratory evidence of hyperthyroidism while ingesting sea-kelp (Vitalia) tablets is reported, six months after stopping the tablets.

Abstract

Iodine-induced hyperthyroidism can develop even in the presence of an otherwise normal gland. One of the less common sources of iodine is tablets of seaweed, sold over the counter without prescription. We report the case of a 72 year old female who developed clinical and laboratory evidence of hyperthyroidism while ingesting sea-kelp (Vitalia) tablets. Six months after stopping the tablets, the symptoms and laboratory evidence of hyperthyroidism had disappeared. No evidence of pre-existing thyroid disease was found.

Keywords

MedicineNursing

MedicineIodide-Induced Thyrotoxicosis

300 Citations1983Judith Fradkin, J. Wolff

In both groups, exophthalmos and antithyroid antibodies are absent, radioiodine uptake is low, there is no thyroid tenderness or pain, and the hyperthyroidism is self-limited (1-6 months) and should thus be treated conservatively.

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134 Citations1975J C Savoie, J P Massin +2 more

Evidence is presented that thyrotoxicosis appeared during treatments by iodide or organic-iodine-containing drugs, in the absence of any past history of thyroid disorder, and was accompanied by almost undetectable radioidine uptake which nevertheless could be activated by TSH.

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70 Citations1975Dawn Adams, T. H. KENNEDY +3 more

The findings support the conclusion that the increased incidence of phyerthyroidism in Tasmania was due to an increased supply of iodine to patients with latent hyperthyroidistan whose thyroid glands, due to the presence of toxid nodule(s) or thyroid-stimulating autoantibodies, were unresponsive to control by TSH deprivation.

The Journal of Clinical Endocrinology & MetabolismThe Effect of Iodized Oil on the TSH Response to TRH in Endemic Goiter Patients

13 Citations1975Geraldo Medeiros‐Neto, Mario Penna +4 more

It is confirmed that plasma TSH levels are increased in endemicGoitrous patients but not in normal controls living in the same endemic area and it is suggested that the pituitary threshold for inhibition of secretion of TSH by T4 and T3 has been reset in these goitrous subjects to achieve a persistently higher secretion rate of T SH.

Acta Medica ScandinavicaIODINE‐INDUCED TOXIC DIFFUSE GOITRE

13 Citations1974K. Liewendahl, A. Gordin

This case shows that neither pre-existing iodine deficiency nor goitre are necessary for development of iodine-induced hyperthyroidism and that a combination of iodine -induced thyrotoxicosis andGoitre can occur.