what is hyperthyroidism symptoms
Hyperthyroidism is a condition in which an overactive thyroid gland is producing an excessive amount of thyroid hormones that circulate in the blood.(Hyper means over in Greek). Thyrotoxicosis is a toxic condition that is caused by an excess of thyroid hormones from any cause. There are many possible causes of hyperthyroidism. 2  Common symptoms of hyperthyroidism include restlessness, tremors, weight loss despite an increased appetite, sweating, rapid heart rate, intolerance to heat, and frequent bowel movements. 3  Treatments for hyperthyroidism include medications, ablation, and surgery.