After liquid nitrogen cryotherapy, due to local tissue cell dehydration and necrosis, and then the local redness, swelling, blister formation, etc.; whether you need to pick the blisters mainly according to the specific circumstances of the blisters, for the smaller blisters do not need to pick the blisters, while the larger blisters can be picked.
1. Smaller blisters: Smaller blisters have less tissue fluid inside, and the body can gradually absorb it on its own, so it doesn’t need to be pierced. Some of the smaller blisters may rupture on their own, after which it is necessary to pay attention to the use of iodophor or alcohol and other disinfectant wiping disinfection, in order to prevent infection.
2. Larger blisters: they can be punctured by using a disposable sterile syringe needle to puncture the bottom of the blister, discharging the internal tissue fluid, and cutting off part of the blister wall, but most of the blister wall needs to be retained to provide some protection to the wound. After picking, use povidone-iodine and other disinfectant to disinfect the wound, and sterile gauze bandage to prevent the wound from getting infected.
It is recommended that the patient go to the hospital, complete all the tests to clarify the condition, and then the professional physician will give the appropriate treatment for the condition of the blister.