Foot blisters

Foot blisters

Fact Checked

Foot blisters are small pockets of fluid that form on your foot because of numerous reasons. These blisters can vary in size and can be caused by mostly because of friction but others such as an injury to a blood vessel, frostbite, an allergic reaction, a bacterial infection, and others can also trigger these blisters to appear.

Depending on where the blister is located, it may interfere with everyday tasks such as walking or exercising.

There are several home treatments available that can help relieve discomfort and lower the risk of repeated blisters.

What are the causes?

Foot blisters
Do not burst the blister as an open blister can cause an infection.

The most common cause of blisters to appear on your foot is friction. Walking or running for several hours a day puts pressure on your heels, soles, and toes. The longer you are on your feet during the day, the greater your risk for blisters.

Other causes are poorly fitted footwear, shoes that are too tight or loosely can brush against the skin which causes friction. As a result, fluid accumulates underneath the upper skin layer.

Excessive moisture and perspiration can also trigger a blister. This is common during warm seasons to those who participate in activities like exercising or sports, particularly runners. The blisters develop if sweat obstructs the pores on your skin found in the feet.

Foot blisters can also form after getting a sunburn. Other reasons include:

  • Bacterial infection
  • Fungal infection
  • Exposure to chemicals
  • Frostbite
  • Allergic reaction
  • Chickenpox
  • Herpes

Home treatments for foot blisters

Having a blister on your feet can be uncomfortable and may tempt you to pick or burst the blister. Do not burst the blister as an open blister can cause an infection. Cover the blister using an adhesive bandage to help protect it while it recuperates.

If a blister is left alone, it will eventually harden and disappear on its own. While the blister may be uncomfortable as it heals, you can drain the blister to possibly provide relief.

More Information

The details posted on this page on foot blisters is for learning purposes only. To learn about the causes and how it is managed, enroll in a first aid course with one of our training providers.


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