Blisters are a fluid filled sac caused by heat and/or friction. Many athletes dread getting foot blisters, which can make walking or running a painful experience.


If it is small and closed, leave it alone and take steps to keep it from growing larger – stop walking, change shoes, and cover it with a loose bandage.

If you can’t stop, protect the blister with a donut-shaped moleskin pad leaving the area over the blister open.

If the blister is larger than 1 inch across, it is best to drain it.

To Drain A Foot Blister:

  • Sterilize a needle with alcohol.
  • Puncture the blister and carefully press the fluid from it.
  • Leave the skin intact, do not peel or cut it off.
  • Gently wash the area with soap and water.
  • Gently smooth the flap of skin over the blister.
  • Apply an antibiotic ointment and a sterile bandage.
  • Do not use alcohol or iodine – these will delay healing.
  • Change the bandage once a day to reduce the chance of infection.
  • Remove the bandage at night to let the area dry.