Newborns with high thyroid hormone, mostly considered to be physiological, but also to consider the newborn hyperthyroidism. 1. physiological increase, thyroid hormone slightly increased, no other abnormalities, may be physiological, newborn growth and development is too fast, the body of thyroid hormone synthesis increased, you can first observe. 2. Neonatal hyperthyroidism, relatively rare, mostly due to the mother has hyperthyroidism and cause the disease, most of the children 3 months after birth can slowly get better, if the long time does not get better, we recommend that specialists to consult, as soon as possible to deal with. If you find that your newborn’s thyroid hormone is high, it is recommended that you go to the hospital first to confirm the diagnosis before treatment.