I think I'm allergic. May be a little allergic to the ingredients of hot compress Chinese medicine. As long as it doesn't itch or hurt, it will disappear naturally. External hot compress is also one of the commonly used medication methods. It is best to know what medicine to use, and it is best to give it reasonably according to your physical condition in vitro. At least I have studied Chinese medicine for so many years, and I haven't met any magic medicine that can cure all diseases.