No matter what kind of trauma, as long as it is greater than 2 weeks to heal, and especially greater than 3 weeks to heal, it will be scarred to varying degrees. The earlier the scar prevention is in place, the smaller the scar will be. Also, after the wound has healed, especially after functional exercise, blisters of varying sizes always reappear and recur. What is going on? How to deal with it? Professionally speaking, this is a tension blister. After the deep burns heal, due to the structural damage between the epidermis and the dermis, the epidermis and the dermis tend to separate once the healing process resumes or when the exercise is intensified, thus producing blisters. Tension blisters are not caused by infection, but this type of blister is prone to infect the trauma if it is not handled well. In terms of treatment, the blisters are small (as shown in the picture) and can be absorbed by themselves with topical growth factors or other scalding drugs, such as Forinmi, Ansul, etc. If they are any larger, they need to be bandaged and changed. Secondly, applying elastic sleeve to treat the scar is also a way to prevent blistering. However, it must be the right size and elasticity, otherwise it is counterproductive. Finally, it is emphasized that functional rehabilitation is crucial in the later stages of burns, and that rehabilitation should be adhered to even though it may make more blisters. Over time, the epidermal and dermal structures will slowly become stronger, and blisters will be less likely to occur afterwards.