Canadian Medical Guide > Diseases > Endocrine Diseases > Thyroid Diseases Terms and Definitions

Thyroid Diseases

Medical Definition:
Guide Notes:	GEN or unspecified; prefer specifics; inflamm dis = THYROIDITIS; thyroid crisis & thyroid storm = THYROID CRISIS; thyroid nodule = THYROID NODULE; chronic thyroiditis = THYROIDITIS, CHRONIC see THYROIDITIS, AUTOIMMUNE; subacute thyroiditis = THYROIDITIS,

Thyroid Diseases Categories.

	Euthyroid Sick Syndromes - Abnormalities in thyroid hormone and thyroid-stimulating hormone levels, often simulating hypothyroidism, in euthyroid patients suffering some other illness, such as diabetes mellitus or liver cirrhosis.
	Goiter - Enlargement of the thyroid gland.
	Hyperthyroidism - Excessive functional activity of the thyroid gland.
	Hyperthyroxinemia - Excess of thyroxine in the blood.
	Hypothyroidism - The clinical syndrome that results from decreased secretion of thyroid hormone from the thyroid gland. It leads to a slowing of metabolic processes and in its most severe form to the accumulation of mucopolysaccharides in the skin, causing a nonpitting edema termed myxedema. Cretinism is the congenital form leading to abnormalities of intellectual and physical development. (Bennett, et al., Cecil Textbook of Medicine, 20th ed)
	Thyroid Hormone Resistance Syndrome - An inherited syndrome of peripheral resistance to thyroid hormones, transmitted as an autosomal recessive trait, characterized by increased serum concentrations of thyroxine and triiodothyronine, increased thyroid hormone binding ratio, and normal to slightly increased thyroid-stimulating hormone and its response to thyrotropin-releasing hormone. The affected persons are euthyroid to slightly hypothyroid. The absence of hypermetabolism and the presence of possible hypothyroidism indicate the existence of partial resistance to the peripheral action of thyroid hormone. (From Jablonski's Dictionary of syndromes & eponymic diseases, 1991)
	Thyroiditis
	Thyrotoxicosis - The clinical syndrome that reflects the response of the peripheral tissues to an excess of thyroid hormone.

Thyroid Diseases Medical Definitions and Terms

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