thyrotoxicosis

Thyrotoxicosis is a metabolic disorder characterized by elevated concentrations of THYROID HORMONES in the bloodstream, resulting from increased hormone production, excessive hormone release, or external thyroid hormone intake. It affects the ENDOCRINE SYSTEM and commonly involves overactivity of the THYROID GLAND, although not all cases are due to HYPERTHYROIDISM. Increased levels of THYROXINE (T4) and TRIIODOTHYRONINE (T3) accelerate BASAL METABOLIC RATE and produce symptoms such as TACHYCARDIA, weight loss, heat intolerance, tremors, and anxiety. Causes include GRAVES DISEASE, THYROIDITIS, toxic multinodular goiter, and thyroid hormone excess. Diagnosis is based on THYROID FUNCTION TESTS, including measurement of THYROID-STIMULATING HORMONE (TSH) and thyroid hormone levels.

Thyrotoxicosis is a condition where there is too much thyroid hormone in the body, causing body processes to become faster than normal.

• Thyrotoxicosis occurs due to excess thyroid hormones in the body. • It increases the body's metabolism and energy use. • It may cause: - Fast heartbeat. - Weight loss. - Sweating and heat intolerance. - Nervousness or tremors. • It can be caused by several thyroid conditions. • Graves' disease is the most common cause of hyperthyroid-related thyrotoxicosis. • Thyrotoxicosis and hyperthyroidism are related but not exactly the same: - Hyperthyroidism: thyroid gland makes too much hormone. - Thyrotoxicosis: any condition with excess thyroid hormone effects. • Diagnosis is usually done through thyroid hormone blood tests.