Hashimoto’s hypothyroidism is usually the result of Hashimoto’s thyroiditis. Hashimoto’s thyroiditis, also known as chronic lymphocytic thyroiditis, is an autoimmune disease and a common cause of hypothyroidism. Patients with Hashimoto’s thyroiditis are usually only positive for thyroid peroxidase antibodies in the early stages of the disease and have no clinical symptoms. Symptoms of hypothyroidism, such as chills, fatigue, feeling of swelling in hands and feet, drowsiness, memory loss, oligosweat, joint pain, weight gain, constipation, etc., may appear in the later stages of the disease. It is recommended that patients with suspected Hashimoto’s thyroiditis should consult a doctor for examination in a timely manner, and take levothyroxine replacement therapy under the guidance of a physician if symptoms of hypothyroidism are present.