If there is discoloration, it is possible that the change is caused by simple allergic factors. You can choose to use hydrocortisone butyrate cream and apply it twice a day to make the symptoms subside quickly. If the small red dots do not fade after pressure, it should be a spider nevus, which is a subcutaneous bleeding spot caused by poor liver function and abnormal blood clotting function, so you can choose to go to the local hospital for liver function test and go to the gastroenterology department for targeted treatment after abnormalities are found. When the abnormal liver function is restored to normal, the red dots will gradually fade with time. During the treatment period, you need to be careful not to pick it up with your hands, otherwise it may cause more bleeding.