Hypothyroidism and hypothyroidism are one and the same, both referring to hypothyroidism. The abbreviation for hypothyroidism is hypothyroidism, and some patients are accustomed to calling it hypothyroidism. The causes of this condition are complex and are mainly considered to be related to autoimmune damage, destruction of the thyroid gland, iodine overdose or deficiency, pituitary lesions, and ectopic thyroid gland. The main symptoms of the disease include fatigue, slowness of movement, fear of cold, excessive sweating, mucous edema of the skin, as well as loss of memory, concentration and calculation. In addition, the disease also affects the cardiovascular system, digestive system, respiratory system, blood system and reproductive system to varying degrees. Currently, the treatment of this disease is mainly based on the application of thyroid hormone and other drugs. In daily life, one should keep warm and avoid infections, all of which can help control the disease. Once the disease is diagnosed, medical treatment should be sought promptly. Specific medical measures and nursing care must follow the doctor’s instructions.