Blister Treatment: A small, unbroken blister less than 1 in. (2.5 cm) across, even a blood blister, will usually heal on its own. Do not try to break the blister. Just leave it alone. Leave the blister uncovered unless something rubs against it. If you do cover it:put on a loose bandage. Secure the bandage so the tape does not touch the blister.
Answered 7/21/2013
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