NCIt definition : A hypermetabolic syndrome caused by the elevation of thyroid hormone levels in the
serum. Signs and symptoms include tachycardia, palpitations, tremor, weight loss,
warm weather intolerance, and moist skin. Causes include Graves disease, toxic nodular
goiter, toxic thyroid nodule, and lymphocytic thyroiditis.;
Alternative definition : NICHD: A syndrome caused by excessive levels of thyroid hormone due to overproduction
or excessive release of stored thyroid hormone.;