Although rarely reported, the degree of thyroid hormone elevation can be extremely high, resulting in physiological decompensation or thyroid storm.[60]Sherman SI, Simonson L, Ladenson PW. Clinical and socioeconomic predispositions to complicated thyrotoxicosis: a predictable and preventable syndrome? Am J Med. 1996 Aug;101(2):192-8.
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[61]Swinburne JL, Kreisman SH. A rare case of subacute thyroiditis causing thyroid storm. Thyroid. 2007 Jan;17(1):73-6.
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long term
low
Approximately 15% of patients will have permanent hypothyroidism and require lifelong levothyroxine to normalise the TSH.[2]Fatourechi V, Aniszewski JP, Fatourechi GZ, et al. Clinical features and outcome of subacute thyroiditis in an incidence cohort: Olmsted county, Minnesota, study. J Clin Endocrinol Metab. 2003 May;88(5):2100-5.
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[4]Ross DS, Burch HB, Cooper DS, et al. 2016 American Thyroid Association guidelines for diagnosis and management of hyperthyroidism and other causes of thyrotoxicosis. Thyroid. 2016 Oct;26(10):1343-421.
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