Thyroid hormones
Necessary to maintain normal metabolism, growth and development.
Hypothyroidism
Cause Cretinism if it happens in embryo or neonatal period.
Cause myxedema if it happens in adults when the thyroid hormone could be used in replacement therapy.
Hyperthyroidism
A syndrom characterized by thyroid oversecretion and metabolic disorder caused by multiple reasons.
It can be treated with radioactive iodine (
131I) irradation, antithyroid drugs and operation.