Overview HyperthyroidismHyperthyroidism - overactive thyroid is a disease in which the thyroid is hyperactive and makes too much thyroid hormone. Like most conditions of the thyroid gland, it is more common in women.
Overview HyperthyroidismHyperthyroidism - overactive thyroid is a disease in which the thyroid is hyperactive and makes too much thyroid hormone. Like most conditions of the thyroid gland, it is more common in women. It is important to distinguish between these two causes, in order to choose the appropriate treatment.
A thyroid uptake scanThyroid uptake scan - radioactive iodine scan to detect hyperfunctioning thyroid nodules also known as a radioactive iodine scan can help tell the difference between these two causes. Problems causing thyroid hormone overproduction have increased uptake on thyroid scanning i.
Overproduction of thyroid hormone is the most common cause of hyperthyroidism and can be caused by Graves' diseaseGraves' disease - autoimmune overproduction of thyroid hormone resulting in hyperthyroidismtoxic multinodular goiterGoiter - enlarged thyroidand toxic adenomaToxic adenoma - single nodule in an otherwise normal thyroid gland that makes too much thyroid hormone and leads to hyperthyroidism.
Symptoms Symptoms that may be associated with hyperthyroidismHyperthyroidism - overactive thyroid include anxiety, insomnia inability to sleep through the nighttremors, palpitations, weight loss, muscle weakness, heat intolerance, excessive sweating, and menstrual changes.
The number, degree, and severity of these symptoms can provide some clue as to the severity of hyperthyroidism. Diagnosis Diagnosing hyperthyroidismHyperthyroidism - overactive thyroid is based on history and physical exam findings along with appropriate laboratory testing.
On physical exam, the physician may find that the patient has a rapid heart rate tachycardiairregular heart beats arrhythmias, including atrial fibrillationeye symptoms such as dryness, burning, bulging, double visionor hand tremors.
In addition, the thyroid gland may be larger than normal. Laboratory testing to confirm the diagnosis of hyperthyroidism will include thyroid function tests.
Thyroid uptake scanning is used to determine if the thyroid is making too much thyroid hormone, leading to a high, or "hot" uptake scan versus if the thyroid is being destroyed as in thyroiditisin which case the scan will be a low, or "cold" uptake scan.
Common causes Graves' disease Graves' diseaseGraves' disease - autoimmune overproduction of thyroid hormone resulting in hyperthyroidism is an autoimmune problem where the body's immune system overstimulates the thyroid. It is the most common cause of hyperthyroidismHyperthyroidism - overactive thyroid.
The hormone that causes the thyroid to make and release thyroid hormone receptor, causes the overproduction of thyroid hormone. The thyroid uptake scanThyroid uptake scan - radioactive iodine scan to detect hyperfunctioning thyroid nodules will be high, or "hot".
On physical exam, patients with Graves' disease may have bulging eyes and violet plaque-like lesions, on the front of their lower legs, which are possibly associated with itchiness.
Toxic multinodular goiter Hyperthyroidism due to toxic multinodular goiterGoiter - enlarged thyroid occurs when one or more nodules growths in the thyroid begin to make too much thyroid hormone. In general, the hyperthyroidism tends to be less severe than that seen in Graves' disease. Laboratory diagnosis is the same as in other cases of hyperthyroidism with low TSH and high T4 and T3 levels.
Thyroid uptake scans may note several separate "hot" spots corresponding to the hyperactive nodules, while the rest of the gland has decreased activity. Toxic adenoma If a single nodule, or a solitary toxic adenomaToxic adenoma - single nodule in an otherwise normal thyroid gland that makes too much thyroid hormone and leads to hyperthyroidismin an otherwise normal thyroid gland makes too much thyroid hormone, it can lead to hyperthyroidism.
This is a less common cause of hyperthyroidism than either Graves' disease or toxic multinodular goiterToxic multinodular goiter - multinodular goiter that produced excess thyroid hormone and causes hyperthyroidism.
|Radiation Studies: HTDS Guide - About Thyroid Disease: Section Summary | CDC RSB||Thyroid disease is common, especially among older people and women.|
|Radiation Studies: HTDS Guide - About Thyroid Disease: Section Summary | CDC RSB||Reviewed By John A. Hyperthyroidism is a medical condition that results from an excess of thyroid hormone in the blood.|
|Overactive thyroid makes too much thyroid hormone||Most common cause of hyperthyroidism in countries with sufficient iodine intake. Caused by TSH receptor antibodies.|
|Epidemiology and aetiology||Overview HypothyroidismHypothyroidism - underactive thyroid is a very thyroid problem in which the thyroid is underactive or non-active.|
The diagnosis can be made in the same fashion as above. Treatment The three main treatments for hyperthyroidismHyperthyroidism - overactive thyroid are: The best treatment depends on a number of factors and the treatment plan should be made with the help of experts in thyroid disease including endocrinologists and surgeons.
In general, the first treatment that is usually tried once a diagnosis is made is usually antithyroid medications. If medical therapy does not work, then a more definitive therapy such as surgery or RAI ablation is considered.
The choice between surgery and RAI ablation will depend on the expertise and experience of the patient's doctors.
Both have equal success rates and low risks of complications. Medical Therapy The two goals for medical therapy are to control symptoms and to prevent excess thyroid hormone production. Beta blockers are medications that are used to control symptoms such as palpitations, anxiety, and tremors.
These medications are usually given until thyroid function has returned to normal. Antithyroid medications are used to block excess thyroid hormone production.Hyperthyroidism is a pathological disorder in which excess thyroid hormone is synthesised and secreted by the thyroid gland.
It is characterised by normal or high thyroid radioactive iodine uptake (thyrotoxicosis with hyperthyroidism or true hyperthyroidism).
Section Summary. Thyroid disease is common, especially among older people and women. Treatment of hyperthyroidism may include antithyroid drugs, radioactive iodine or in rare cases, thyroid surgery. Top of Page. . Graves’ disease is the most common cause of hyperthyroidism, a disorder that causes the thyroid to produce too much thyroid hormone.
Learn the basics of Graves’ disease in this overview article, including common symptoms. hyperthyroidism that you have, the severity of your hyperthyroidism, other medical conditions that may be affecting your health, and your own preference. It may be a good idea to consult with an endocrinologist who is experienced in .
Hyperthyroidism is a pathological disorder in which excess thyroid hormone is synthesised and secreted by the thyroid gland. It is characterised by normal or high thyroid radioactive iodine uptake (thyrotoxicosis with hyperthyroidism or true hyperthyroidism).
To diagnose thyroid diseases, doctors use a medical history, physical exam, and thyroid tests. They sometimes also use a biopsy.
They sometimes also use a biopsy. Treatment depends on the problem, but may include medicines, radioiodine therapy, or .