Hypothyroidism is referred to as hypothyroidism. It is divided into cretinism (also called Ketinism), juvenile hypothyroidism, and adult hypothyroidism. It is partly caused by hypothyroidism, excessive destruction of the thyroid gland during surgery or radiation therapy, the effects of certain medications, and pituitary dysfunction, etc. The cause is unknown in many patients. It is most common in women between the ages of 40 and 60. The onset of the disease is insidious and the development is slow. The symptoms include fear of cold, fatigue, drowsiness, dull expression, slow movement, pale or yellowish face, swollen cheeks and eyelids, weight gain, dry and lusterless hair, thinning and loss of pubic hair, mental retardation, slow pulse, menstrual disorders, and loss of libido. The diagnosis is simple, and the main treatment is drug replacement therapy, which can be done by using synthetic hormones such as levothyroxine sodium and thyroid tablets, etc. The dose should be increased slowly from small doses until it is effective, and after obtaining satisfactory results, a suitable maintenance amount should be found for long-term treatment. The treatment can be combined with Chinese herbal medicine. If you answer “yes” to five or more of the following questions, please go to a regular hospital for medical treatment in time. 1.I feel weak, often sleepy, and my energy and strength are low. 2.My brain is slow, my concentration is difficult, my memory is decreasing, and my actions and reactions have become slower. 3.I gain weight. 4.My skin becomes dry and my nails become brittle, gray and easily broken. 5.I often feel cold (even when everyone else feels comfortable). 6.I have many negative thoughts and feel depressed and depressed. 7, my intestinal function and metabolic level also seems to be slowed down, and sometimes constipation. 8, I feel muscle and bone stiffness and pain, and my hands feel numb. 9.My blood pressure increases or my heart rate slows down. 10.My cholesterol level has increased.