Large or broken blisters usually heal
without problems. Most large blisters will break on their own and then
Wash your hands with soap and water before
touching blisters. Blisters can easily become infected.
If you have
a large blister, you may want to drain it, depending on where it is. If you
decide to drain it:
Clean a needle with rubbing alcohol or
soap and water, then use it to gently puncture the edge of the
Press the fluid in the blister toward the hole you
Wash the blister after you have drained it, and pat it dry
with clean gauze.
Do not remove the flap of skin covering the
blister unless it tears or gets dirty or pus forms under it. If the blister has
just a small puncture or break, leave the flap of skin on, and gently smooth it
flat over the tender skin underneath.
Apply an antibiotic ointment,
such as polymyxin B or bacitracin, if you are not allergic to it. The ointment
will prevent the bandage from sticking to the blister and may help prevent
infection. Do not use alcohol or iodine on the blister, because these may delay
healing. Do not use an ointment if you know you are allergic to
Loosely apply a bandage or gauze. Secure the bandage so the
tape does not touch the blister. Do not wrap tape completely around a hand,
arm, foot, or leg, because it could cut off the blood supply if the limb
swells. If the tape is too tight, you may develop numbness, tingling, pain, or
cool and pale or swollen skin below the level of the tape.
skin under the bandage begins to itch or develops a rash, stop using the
Change the bandage every day and anytime it
gets wet or dirty. You can soak the bandage in cool water just before removing
it to make it less painful to take off.
Avoid wearing clothes or
shoes or doing activities that rub or irritate the blisters until they have
Watch for a skin infection while your
blister is healing. Signs of infection include:
Increased pain, swelling, redness, or warmth
around the blister.