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Blisters on feet can be painful and bothersome. Blisters are small pockets of fluid that form on the upper layers of the skin (the epidermis). The fluid inside a blister is called serum or plasma. This fluid is usually clear, but it can also be red if the blister is filled with blood, or yellowish green if it is filled with pus, indicating an infection. Blisters may appear on one foot or both feet, and they do not discriminate based on gender, age, or race.

Symptoms of Blisters on Feet

If a blister is forming, you'll probably know it, but here are some symptoms that may indicate that a blister is forming on your foot:

  • Redness of skin
  • Tenderness
  • Pain when in you are motion

The best way to treat your blister will depend on the type of blister it is. Blood blisters should never be drained, nor should pus-filled blisters. Most experts say to leave the blister alone and let it pop on its own. Some blisters will heal themselves without invasion. If the blister is located on a weight-bearing part of your foot, however, you may want to consider the following steps:

  1. Wash your hands and the blister with soap and water
  2. Swab the blister with iodine or rubbing alcohol
  3. Sterilize a pin or needle (this can be done with a flame or rubbing alcohol)
  4. Make a small hole at the edge of the blister
  5. Drain the fluid, but leave as much of the skin there as possible
  6. Clean the blister with a sterilizing wipe
  7. Apply an antibiotic ointment
  8. Bandage the blister
  9. Wrap tape over the top to provide extra support

You don't want to turn your blister into an open wound. This will make it more susceptible to infections. Infections in your feet can lead to further complications. To avoid this, it's very important that you properly drain the fluid. If you feel you cannot do this on your own, you should see a doctor. If there is an infection, your doctor may prescribe you antibiotics. Never attempt the steps above if you see symptoms of infection, such as pus, redness, increasing pain, or warm skin. If you have any of these symptoms, seek one of our top podiatrists, Dr. Brent Harwood or Dr. Bradford Egly.

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