ICD-11 definition : This is a primary condition in which the thyroid gland produces and secretes excessive
amounts of the free (not protein bound, and circulating in the blood) thyroid hormones,
triiodothyronine (T3) and/or thyroxine (T4).;
This is a primary condition in which the thyroid gland produces and secretes excessive
amounts of the free (not protein bound, and circulating in the blood) thyroid hormones,
triiodothyronine (T3) and/or thyroxine (T4).