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An ectopic thyroid is a condition in which some of a person's thyroid tissues or the entire gland fails to form in the right place...
Introduction. 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 bodyâs metabolism, triggering a range of symptoms, such as: 1  nervousness and anxiety. 2  hyperactivity â where a person canât stay still and is full of nervous energy. 3  unexplained or unplanned weight loss.