Iodine deficiency in the human body may be accompanied by neck swelling, showing clinical symptoms of hypothyroidism, and it is necessary to treat the disease in time in the early stage to help control the disease.

After iodine deficiency, the thyroid gland may enlarge, showing symptoms such as hair loss and cold limbs, which may also cause the skin to become rougher and the movement to slow down. Thyroid hormones in the human body are generally affected by weak nucleic acids and iodine synthesis. In the case of insufficient iodine intake, it may cause obstacles in the synthesis of thyroid hormones, accompanied by a lack of thyroid hormones in the human body, and symptoms of thyroid function decline may occur.

After iodine deficiency, it can cause changes in the size of the thyroid gland, with some patients showing enlargement, and some patients may develop symptoms of goiter caused by thyroid nodules. At the same time, it may affect normal development and intelligence. If the thyroid gland is slightly enlarged, it may show hoarseness and difficulty breathing, without significant tenderness. However, in severe cases of thyroid enlargement, there may be a sense of pressure, especially in women with severe iodine deficiency, which may cause infertility, miscarriage, and preterm labor. If iodine deficiency occurs during the fetal period, it may be accompanied by dullness, short stature, and a particularly ugly facial appearance.

Generally, it is necessary to improve by eating foods rich in iodine, or by using the method of iodine-131, which can help improve clinical symptoms.