ANATOMY

Detailed explanation-1: -Hyperthyroidism happens when the thyroid gland makes too much thyroid hormone. This condition also is called overactive thyroid. Hyperthyroidism speeds up the body’s metabolism. That can cause many symptoms, such as weight loss, hand tremors, and rapid or irregular heartbeat.

Detailed explanation-2: -A TSH level lower than normal indicates there is usually more than enough thyroid hormone in the body and may indicate hyperthyroidism. When hyperthyroidism develops, free thyroxine (T4) and free triiodothyronine (T3) levels rise above normal. Other laboratory studies may help identify the cause of hyperthyroidism.

Detailed explanation-3: -Overactive thyroid (also known as hyperthyroidism) is a relatively common hormonal condition that occurs when there is too much thyroid hormone in the body. Excess levels of thyroid hormones can then speed up the body’s metabolism, triggering a range of symptoms, such as: nervousness and anxiety.

Detailed explanation-4: -Thyroid gland Graves’ disease is an immune system disorder that results in the overproduction of thyroid hormones (hyperthyroidism). Although a number of disorders may result in hyperthyroidism, Graves’ disease is a common cause.

Detailed explanation-5: -Graves’ disease (diffuse toxic goiter). Graves’ disease is the most common cause of hyperthyroidism. Toxic nodular goiter (also called multinodular goiter). Thyroiditis.