What is the condition called when too much thyroxine is produced?

The condition characterized by the overproduction of thyroxine is known as hyperthyroidism. This occurs when the thyroid gland is overactive, leading to excess levels of thyroid hormones in the bloodstream. These hormones play a critical role in regulating metabolism, heart rate, and energy levels. When thyroxine production is elevated, individuals may experience symptoms such as unexplained weight loss, rapid heartbeat, increased appetite, sweating, and anxiety.

In contrast, goiter refers to an enlargement of the thyroid gland and can occur in both hyperthyroidism and hypothyroidism. Hypothyroidism describes a state of insufficient thyroid hormone production, which is the opposite of hyperthyroidism. Lastly, thyroid-stimulating hormone deficiency relates to insufficient stimulation of the thyroid gland, which does not directly indicate the overproduction of thyroxine. Therefore, hyperthyroidism is the correct terminology for this specific condition of excessive thyroxine production.