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Hyperthyroidism may be assumed due to decreased TSH and a transient fT4 increase. In some cases, this can be distinguished from NTIS by a thyroid ultrasound, which is commonly available in the hospital intensive care unit. [2] NTIS looks similar to central hypopituitarism; both frequently have reduced TSH and thyroid hormone levels. [2]
In Chinese and Japanese people with hyperthyroidism, 1.8–1.9% experience TPP. This is in contrast to North America, where studies report a rate of 0.1–0.2%. [1] [2] Native Americans, who share a genetic background with East Asians, are at an increased risk. [1] The typical age of onset is 20–40.
De Quervain's thyroiditis, also known as subacute granulomatous thyroiditis or giant cell thyroiditis, is a self-limiting inflammatory illness of the thyroid gland. [1] De Quervain thyroiditis is characterized by fever, flu-like symptoms, a painful goiter, and neck pain.
The Wolff–Chaikoff effect has been used as a treatment principle against hyperthyroidism (especially thyroid storm) by infusion of a large amount of iodine to suppress the thyroid gland. Iodide was used to treat hyperthyroidism before antithyroid drugs such as propylthiouracil and methimazole were developed.
Thyroid storm is a rare but severe and life-threatening complication of hyperthyroidism.It occurs when an overactive thyroid leads to hypermetabolism, which can cause death from cardiac arrest or multiple organ failure.
Thyrotoxic myopathy (TM) is a neuromuscular disorder that develops due to the overproduction of the thyroid hormone thyroxine.Also known as hyperthyroid myopathy, TM is one of many myopathies that lead to muscle weakness and muscle tissue breakdown.
Prior to the availability of sensitive TSH assays, thyrotropin releasing hormone or TRH stimulation tests were relied upon for confirming and assessing the degree of suppression in suspected hyperthyroidism. Typically, this stimulation test involves determining basal TSH levels and levels 15 to 30 minutes after an intravenous bolus of TRH ...
Thyrotoxicosis factitia (alimentary thyrotoxicosis, exogenous thyrotoxicosis) [1] [2] is a condition of thyrotoxicosis caused by the ingestion [3] of exogenous thyroid hormone. [ 4 ] [ 5 ] It can be the result of mistaken ingestion of excess drugs, such as levothyroxine [ 6 ] and triiodothyronine , [ 7 ] or as a symptom of Munchausen syndrome .