thyroid gland disease hyperthyroidism DOID:7998 EFO:0009189 ICD10:E05.9 ICD9:242.90 MESH:D006980 MONDO:0004425 NCIT:C3123 Overactivity of the thyroid gland resulting in overproduction of thyroid hormone and increased metabolic rate. Causes include diffuse hyperplasia of the thyroid gland (Graves' disease), single nodule in the thyroid gland, and thyroiditis. The symptoms are related to the increased metabolic rate and include weight loss, fatigue, heat intolerance, excessive sweating, diarrhea, tachycardia, insomnia, muscle weakness, and tremor. SCTID:34486009 overactive thyroid