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[8] [50] Subclinical hypothyroidism is estimated to affect approximately 2% of children; in adults, subclinical hypothyroidism is more common in the elderly, and in White people. [49] There is a much higher rate of thyroid disorders, the most common of which is hypothyroidism, in individuals with Down syndrome [30] [62] and Turner syndrome. [30]
Certain medications can have the unintended side effect of affecting thyroid function. While some medications can lead to significant hypothyroidism or hyperthyroidism and those at risk will need to be carefully monitored, some medications may affect thyroid hormone lab tests without causing any symptoms or clinical changes, and may not require treatment.
Potential complications include thyroid lymphoma. [2] Further complications of hypothyroidism can include high cholesterol, heart disease, heart failure, high blood pressure, myxedema, and potential problems in pregnancy. [1] Hashimoto's thyroiditis is thought to be due to a combination of genetic and environmental factors.
Myxedema coma is an extreme or decompensated form of hypothyroidism and while uncommon, is potentially lethal. [1] [2] [3] A person may have laboratory values identical to a "normal" hypothyroid state, but a stressful event (such as an infection, myocardial infarction, or stroke) precipitates the myxedema coma state, usually in the elderly.
There is still a risk of hypothyroidism though, as the remaining thyroid tissue may not be able to produce enough hormones in the long-run. [citation needed] If the nodule is malignant or has indeterminate cytologic features, it may require surgery. [2] A thyroidectomy is a medium-risk surgery that can result in complications if not performed ...
According to Chang, other possible causes of hyperthyroidism include: thyroiditis (thyroid inflammation), thyroid nodules (which produce more thyroid hormone), and consuming an excess amount of ...
Hashimoto's encephalopathy, also known as steroid-responsive encephalopathy associated with autoimmune thyroiditis (SREAT), is a neurological condition characterized by encephalopathy, thyroid autoimmunity, and good clinical response to corticosteroids.
It is often possible to diagnose myxedema on clinical grounds alone. Characteristic symptoms are weakness, cold intolerance, mental and physical slowness, dry skin, typical facies, and hoarse voice. Results of the total serum thyroxine and free thyroxine index tests usually will confirm the diagnosis. [9]
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