Thyrotoxicosis

Or hyperthyroidism – an overactive thyroid gland, producing excessive circulating free thyroxine and free triiodothyronine, or both.

Overactivity of the thyroid gland, leading to excessive secretion of thyroid hormones and resulting in increased basal metabolic rate. Hyperthyroid subjects are lean and have tense nervous activity. Iodine-induced thyrotoxicosis affects mostly older people who have lived for a long time in iodine-deficient areas, have had a long-standing goitre, and then have been given extra iodine. Also known as Jod-Basedow, or Basedow’s disease.

A toxic condition caused by hyperactivity of the thyroid gland.

Another term for hyperthyroidism.

Hyperactive thyroid gland; excess levels of thyroid hormone also known as Graves’ disease. Characterized by elevated oxygen consumption, elevated energy need, increased irritability and nervousness, bulging eyes, and weight loss.

Abnormally high production of thyroid hormones resulting in symptoms such as nervousness, weight loss, and tachycardia.

The general term for severe hyperthyroidism (overactivity of the thyroid gland). Thyrotoxicosis refers to the group of symptoms and physical changes associated with severe hyperthyroidism, regardless of the cause. Thyrotoxicosis is characterized by nervousness, weakness, difficulty sleeping, increased appetite, restlessness, increased perspiration, muscle cramps, fatigue, excessive thirst, atrophy of muscles, tremor, menstrual irregularities, bulging eyes, unexplained weight loss, diarrhea, an intolerance to heat, an increased heart rate, and palpitations.

The syndrome due to excessive amounts of thyroid hormones in the bloodstream, causing a rapid heart beat, sweating, tremor, anxiety, increased appetite, loss of weight, and intolerance of heat. Causes include simple overactivity of the gland, a hormone-secreting benign tumor or carcinoma of the thyroid, and Graves’s disease (exophthalmic goiter), in which there are additional symptoms including swelling of the neck (goiter) due to enlargement of the gland and protrusion of the eyes (exophthalmos). Treatment may be by surgical removal of the thyroid gland, administration of radioactive iodine to destroy part of the gland, or by the use of drugs (such as carbimazole or propylthiouracil) that interfere with the production of thyroid hormones.

A condition arising due to excessive levels of thyroid hormones in the bloodstream.