- Pictures of Hyperthyroidism - Slideshow
- Pictures of Thyroid Medical Anatomy
- Pictures of Thyroid Conditions - Slideshow
- Thyroid FAQs
- Patient Comments: Hyperthyroidism - Symptoms
- Patient Comments: Hyperthyroidism - Treatments
- Patient Comments: Hyperthyroidism - Experience
- Find a local Endocrinologist in your town
- Hyperthyroidism definition and facts
- What is hyperthyroidism?
- What are the symptoms of hyperthyroidism?
- What causes hyperthyroidism?
- What is graves' disease?
- What is thyroiditis (inflammation of the thyroid)?
- What are other causes of hyperthyroidism?
- Which types of doctors treat hyperthyroidism?
- How is hyperthyroidism diagnosed?
- How is medications treat hyperthyroidism?
- Medications that treat symptoms of hyperthyroidism
- Antithyroid drugs for hyperthyroidism
- Radioactive iodine for hyperthyroidism
- Surgery for hyperthyroidism
- What should I do if I think I have hyperthyroidism?
Quick GuideHyperthyroidism Symptoms and Treatment
Which types of doctors treat hyperthyroidism?
Endocrinologists are specialists in diagnosing and treating hormonal disorders such as hyperthyroidism. Primary care physicians, including family practitioners and internists, may also be involved in treating patients with hyperthyroidism. Ophthalmologists and ophthalmic surgeons may be involved in the care of patients with Graves' disease.
How is hyperthyroidism diagnosed?
Hyperthyroidism can be suspected in patients with
- excessive sweating,
- smooth velvety skin,
- fine hair,
- a rapid heart rate, and
- an enlarged thyroid gland.
There may be puffiness around the eyes and a characteristic stare due to the elevation of the upper eyelids. Advanced symptoms are easily detected, but early symptoms, especially in the elderly, may be quite inconspicuous. In all cases, a blood test is needed to confirm the diagnosis.
The blood levels of thyroid hormones can be measured directly and usually are elevated with hyperthyroidism. However, the main tool for detection of hyperthyroidism is measurement of the blood TSH level. As mentioned earlier, TSH is secreted by the pituitary gland. If an excess amount of thyroid hormone is present, TSH is "down-regulated" and the level of TSH falls in an attempt to reduce production of thyroid hormone. Thus, the measurement of TSH should result in low or undetectable levels in cases of hyperthyroidism. However, there is one exception. If the excessive amount of thyroid hormone is due to a TSH-secreting pituitary tumor, then the levels of TSH will be abnormally high. This uncommon disease is known as "secondary hyperthyroidism."
Although the blood tests mentioned previously can confirm the presence of excessive thyroid hormone, they do not point to a specific cause. If there is obvious involvement of the eyes, a diagnosis of Graves' disease is almost certain. A combination of antibody screening (for Graves' disease) and a thyroid scan using radioactively-labelled iodine (which concentrates in the thyroid gland) can help diagnose the underlying thyroid disease. These investigations are chosen on a case-by-case basis.