Blisters: First aid
By Mayo Clinic Staff
If a blister isn't too painful, try to keep it intact. Unbroken skin over a blister may provide a natural barrier to bacteria and decreases the risk of infection. Cover it with an adhesive bandage. If you're allergic to the adhesive used in some tape, use paper tape.
Seek medical care if the blister is painful or prevents you from walking or using one of your hands. Consider taking the following self-care measures if medical help is not available.
https://www.mayoclinic.org/first-aid/first-aid-blisters/basics/art-20056691
