The blisters on the back of the foot, if you want to remove, to understand what factors are causing. 1, the blisters may be mosquito bites, skin allergy stimulation caused by papular urticaria, you can choose to use oral dicloretin tablets, choose to use glyburide lotion to become dry blisters, later you can apply hydrocortisone butyrate cream to accelerate the healing of the wound. 2, there may be because of external friction, irritation If you’re looking for an irritating blister, you can choose to use a sterile syringe to puncture the blister at the base of the blister and then release the solution inside and disinfect it with iodophor solution. The actual fact is that you can find a lot of people who have been in the business for a long time, but you need to pay attention to not wearing too tight shoes for a short period of time, and try to wear loose and breathable cloth shoes to prevent the blisters from coming back again. 3, if the blisters on the back of the foot are accompanied by intense pain and are distributed in a band, then it is possible that the viral infection is causing herpes zoster, and you need to choose to take oral vaxilovir hydrochloride with topical recombinant interferon gel for treatment.