The recurrence rate of scars is particularly high, and we generally recommend scar friends to go for radiotherapy after surgery, and this is indeed the case in clinical work. For ear scars, which have a lower recurrence rate, some scar patients who are not willing to undergo radiotherapy can also consider multiple post-operative scar injections to control recurrence, and the clinical results are also good. Radiation therapy sounds scary, will it lose hair? First of all, radiotherapy for scars is different from the tumor radiotherapy we usually hear, it is a superficial irradiation treatment for the skin, the effective distance of the radiation is only about 1cm, so it is safe to receive radiotherapy with certain protection measures, and will not cause adverse effects on other surrounding tissues and organs, radiotherapy is not chemotherapy, and it will not cause hair loss. Secondly, superficial radiotherapy is also radiation therapy and there is a dose limit. If the dose is exceeded, no matter how protective measures are given, the skin will be affected, so in general, doctors will strictly control the dose of radiotherapy. When does radiation therapy start? How many times do I have to do it? In general, the first radiotherapy after surgical excision is recommended to be done within 24 hours after surgery; while in the case of skin grafting, it depends on the survival of the epithelium after the skin grafting, and radiotherapy will be started only after the epithelium has been stabilized, and if the epithelium does not survive, then radiotherapy will be done after the wound has healed. Therefore, when to start radiotherapy depends on what kind of surgery is done. The number of times a course of radiotherapy varies from hospital to hospital. With the same dose of radiation, some hospitals will finish radiotherapy in two doses, while some hospitals will do radiotherapy once a day or once every other day, for a total of 3-6 times. How long after radiotherapy can I prepare for childbirth? I personally recommend at least six months and preferably one year. Does it mean that the scars will not grow after radiation therapy? No, it does not. For example, without radiotherapy, the chance of recurrence of pathological scars after surgery is more than 90%, but with radiotherapy, the recurrence rate can be controlled to less than 10%. Therefore, radiotherapy is to reduce the recurrence rate of scar growths, not to guarantee that they will not recur. This point must be clear before we treat it.