You may have a very mild form of hyperthyroidism called subclinical
hyperthyroidism if your thyroid tests show that:
thyroid hormones thyroxine (T4) and triiodothyronine
(T3) are normal.
Subclinical hyperthyroidism is different from
. Your TSH levels are low but
your thyroid hormone levels are normal.
If you have subclinical hyperthyroidism, you may have no symptoms at
all. Or you may lose weight or feel anxious.
People with subclinical hyperthyroidism have a greater chance of
having some of the more serious problems related to hyperthyroidism such as
heart and bone problems. But experts do not know whether the benefits of
treating subclinical hyperthyroidism outweigh the risks. For this reason, if
you have subclinical hyperthyroidism, your doctor may just watch you