Subclinical hyperthyroidism is characterized by circulating thyrotropin levels below the reference range and normal serum thyroid hormone levels.
You may have a very mild form of hyperthyroidism called subclinical hyperthyroidism if your thyroid tests show that: 1  Your thyroid-stimulating hormone (TSH) levels are low. 2  Your thyroid hormones thyroxine (T4) and triiodothyronine (T3) are normal. If you have subclinical hyperthyroidism, you may have no symptoms at all. Or you may lose weight or feel anxious. People with subclinical hyperthyroidism may also develop some of the more serious problems related to hyperthyroidism such as heart and bone problems. Subclinical hyperthyroidism: Introduction. Subclinical hyperthyroidism: Subclinical hyperthyroidism is characterized by a low or undetectable concentration of serum thyrotropin (TSH) with free triiodothyronine (FT3) and free thyroxine (FT4) levels within laboratory reference ranges.  Subclinical hyperthyroidism is an increasingly recognized entity that is defined as a normal serum free thyroxine and free triiodothyronine levels with a thyroid-stimulating hormone level suppressed below the normal range and usually undetectable. Typically, the RAIU is normal or only slightly increased in patients with subclinical hyperthyroidism, and thyroid tissue heterogeneity may make it more difficult to determine the appropriate dose of radioactive iodine necessary to ablate the thyroid. Hyperthyroidism, also known as over active thyroid and hyperthyreosis, is the condition that occurs due to excessive production of thyroid hormone by the thyroid gland. Thyrotoxicosis is the condition that occurs due to excessive thyroid hormone of any cause and therefore includes hyperthyroidism. The diagnosis of hyperthyroidism is confirmed by blood tests that show a decreased thyroid-stimulating hormone (TSH) level and elevated T 4 and T 3 levels. TSH is a hormone made by the pituitary gland in the brain that tells the thyroid gland how much hormone to make. Subclinical hyperthyroidism is characterized by circulating thyrotropin (thyroid-stimulating hormone; TSH) levels below the reference range and normal serum thyroid hormone levels (1). The diagnosis is primarily biochemical and depends on the definition of “normal” TSH levels. The prevalence of low serum TSH levels ranges between 0.5% in children and 15% in the elderly population. Mild subclinical hyperthyroidism is more common than severe subclinical hyperthyroidism. by Elaine Moore. Subclinical hyperthyroidism is a condition of suppressed TSH in the presence of normal thyroid hormone levels. Patients with subclinical hyperthyroidism may have mild or no symptoms.  The ideal approach for adequate management of subclinical hyperthyroidism (low levels of thyroid-stimulating hormone [TSH] and normal thyroid hormone level) is a matter of intense debate among endocrinologists. Exogenous subclinical thyrotoxicosis: This is the most common type of subclinical hyperthyroidism. Irrespective of the cause of hypothyroidism, thyroid blood tests in overtreated hypothyroid patients show results consistent with thos Subclinical hyperthyroidism is characterized by circulating thyrotropin (thyroid-stimulating hormone; TSH) levels below the reference range and normal serum thyroid hormone levels (1). The diagnosis is primarily biochemical and depends on the definition of “normal” TSH levels. Exogenous subclinical thyrotoxicosis: This is the most common type of subclinical hyperthyroidism. Irrespective of the cause of hypothyroidism, thyroid blood tests in overtreated hypothyroid patients show results consistent with thos The ideal approach for adequate management of subclinical hyperthyroidism (low levels of thyroid-stimulating hormone [TSH] and normal thyroid hormone level) is a matter of intense debate among endocrinologists. The prevalence of low serum TSH levels ranges between 0.5% in children and 15% in the elderly population. Mild subclinical hyperthyroidism is more common than severe subclinical hyperthyroidism. Hyperthyroidism is a condition in which there is too much thyroid hormone in the body. The thyroid gland is located in the front of your neck. It produces hormones that regulate the way your body uses energy. If there is too much thyroid hormone, your body functions speed up. Subclinical hyperthyroidism is a mild form of hyperthyroidism.
http://www.webmd.com/women/tc/subclinical-hyperthyroidism-topic-overview http://www.rightdiagnosis.com/s/subclinical_hyperthyroidism/intro.htm http://www.aafp.org/afp/2002/0201/p431.html https://en.wikipedia.org/wiki/Hyperthyroidism http://endometabol.com/?page=article&article_id=3447 http://www.elaine-moore.com/Articles/SubclinicalOtherThyroidDisorders/SubclinicalHyperthyroidism/tabid/76/Default.aspx http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3693616/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3693616/ http://endometabol.com/?page=article&article_id=3447 http://www.aafp.org/afp/2011/0415/p943.html
what is subclinical hyperthyroidism