Hyperthyroidism Health Dictionary

Hyperthyroidism: From 3 Different Sources


The overproduction of thyroid hormones by an overactive thyroid gland. The most common form of hyperthyroidism is Graves’ disease, which is an autoimmune disorder. Less commonly, the condition is associated with the development of enlarged nodules within the thyroid gland.

The characteristic signs of hyperthyroidism include weight loss, increased appetite, increased sweating, intolerance to heat, a rapid heart-rate, and protruding eyes. In severe cases, the thyroid gland often becomes enlarged (see goitre) and there is physical and mental hyperactivity and muscle wasting.

The diagnosis of hyperthyroidism is confirmed by measuring the level of thyroid hormones present in the blood. The condition can be treated with drugs that inhibit the production of thyroid hormones or by removal of part of the thyroid gland.

Health Source: BMA Medical Dictionary
Author: The British Medical Association
Excessive activity of the thyroid gland. (See THYROID GLAND, DISEASES OF.)
Health Source: Medical Dictionary
Author: Health Dictionary
n. overactivity of the thyroid gland, either due to a tumour, overgrowth of the gland, or *Graves’ disease. See thyrotoxicosis.
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Apathetic Hyperthyroidism

a condition seen in older patients with *thyrotoxicosis, characterized by weight loss, slow atrial fibrillation, and severe depressive illness, rather than the usual florid symptoms. They have small goitres on examination and the blood tests confirm thyrotoxicosis, which is treated in the standard manner.... apathetic hyperthyroidism



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