Early signs and symptoms of hypothyroidism in babies are inconspicuous and most symptoms are mild. The earliest stage of hypothyroidism in babies may present with a bloated face, rough skin, delayed physiologic jaundice, and jaundice that subsides more slowly. Once hypothyroidism is diagnosed in a baby, it should be treated immediately, whether the cause is in the thyroid gland itself or in the hypothalamus-pituitary gland. Thyroid hormone replacement therapy can be used in babies with hypothyroidism under the supervision of a doctor, and thyroid hormone therapy should be started within 4-6 weeks after birth. If treatment is delayed, it can affect your baby’s neurological and intellectual development. Monitor your baby’s changes at any time. If any of the above symptoms appear, you should go to the hospital in time to improve the examination, clarify the disease and carry out targeted treatment under the guidance of the doctor, so as to avoid affecting the growth of your baby.