Whether or not hypothyroidism is aggravated by thyroid cancer surgery is generally related to the volume of thyroid tissue removed during surgery. Surgery for thyroid cancer can cause some damage to the thyroid gland, and often most or the entire thyroid gland needs to be removed during the surgery, which makes it easier to aggravate hypothyroidism. It is often necessary to take medication to supplement thyroxine, such as levothyroxine sodium tablets (Euthyrox). The full name of hypothyroidism is hypothyroidism. Postoperative hypothyroidism after thyroid cancer surgery, like hypothyroidism caused by autoimmune hypoparathyroidism, may present with symptoms such as fatigue, fear of cold, memory loss, etc. You may consider supplementing with Eucerin under the guidance of your doctor.