Thyrotoxicity is a term used to describe overactivity of the thyroid gland, resulting in excessive amounts of thyroid hormone circulating in the body. Other terms used to describe this condition include hyperthyroidism, toxic goiter, and Graves' disease. Symptoms of thyrotoxicity can include anxiety, tremors, weight loss, and an irregular heartbeat. Treatment may involve medications to regulate thyroid hormone levels or surgery to remove part or all of the thyroid gland. It is important to seek medical attention if you suspect you may be experiencing symptoms of thyrotoxicity, as this condition can have serious consequences if left untreated.