Hyperthyroidism Following Hypothyroidism: Data on Six Cases

Vahab Fatourechi, Hossein Gharib

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Hypothyroidism complicated by spontaneous hyperthyroidism is an interesting but rare occurrence in the spectrum of autoimmune thyroid disorders. We report data on six patients who had hyperthyroidism two to 20 years (mean, eight years) after the diagnosis of hypothyroidism. In three patients, triiodothyronine toxicosis accounted for the hyperthyroid symptoms. The presence of thyroid antibodies and lymphocytic infiltration in the thyroid gland points to an autoimmune mechanism. It is believed that this phenomenon occurs more often than is recognized.

Original languageEnglish (US)
Pages (from-to)976-978
Number of pages3
JournalArchives of internal medicine
Issue number4
StatePublished - Apr 1988

ASJC Scopus subject areas

  • Internal Medicine


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