Graves’ thyrotoxicosis following Hashimoto’s thyroiditis

A Troisi,1 P Novati,1 L Sali,1 M Colzani,1 G Monti,1 C Cardillo,3 M Tesauro21Division of Internal Medicine, Saronno Hospital, Italy; 2Department of Internal Medicine, Tor Vergata Clinical Center, University of Rome, Rome, Italy; 3Department of Internal Medicine, Università Cattolica del Sacro Cuore, Rome, ItalyAbstract: Autoimmune thyroid disease traditionally includes chronic thyroiditis, autoimmune hyperthyroidism (Graves’ disease), and primary nongoitrous myxedema, and these diseases have a common syndrome-sharing pathophysiology. Here we report a rare case of simultaneous occurrence of thyrotoxicosis linked to Graves’ disease and chronic hypothyroidism due to Hashimoto’s thyroiditis.Keywords: Hashimoto’s thyroiditis, Graves’ disease, autoimmune thyroid disorders