This bony bump forms on the joint at the base of the big toe. Learn more about the causes and treatments of this condition, which sometimes can be painful.
Update Date: 08.05.2025
A bunion is a bony bump that forms on the joint at the base of the big toe. It happens when some of the bones in the front part of the foot move out of their regular position. This causes the big toe to get pulled toward the smaller toes. It also forces the joint at the base of your big toe to stick out. The skin over the bunion might change in color and feel sore.
Wearing tight, narrow shoes might cause bunions or make them worse. Bunions also can form due to the shape of the foot, a foot defect or a condition such as arthritis.
Smaller bunions, called bunionettes, can form on the joint of the little toe.
The symptoms of a bunion include:
Bunions often don't need medical treatment. But some symptoms should be checked by a member of your health care team. Or you could see a doctor who treats foot conditions, called a podiatrist, or an orthopedic foot specialist. Get a checkup if you have:
Many theories exist about how bunions form. But the exact cause isn't clear. Factors likely include:
Experts disagree on the role that shoes play. Some say that tight, high-heeled or narrow shoes cause bunions. Others say that footwear simply contributes to bunions forming.
Bunions might be linked with some types of arthritis. The link is especially strong with types of arthritis that involve painful swelling due to a problem with the immune system. These conditions include rheumatoid arthritis.
These factors might raise the risk of bunions:
Bunions can lead to health problems that include:
To help prevent bunions, choose shoes carefully. They should be supportive and have a wide toe box — no pointy toes. There also should be space between the tip of your longest toe and the end of the shoe.
Your shoes should match the shape of your feet without squeezing or pressing any part of your foot.
To find out if you have a bunion, your health care professional asks you about your symptoms and checks your foot. After the physical exam, an X-ray of your foot can help determine the best way to treat it.
Treatment choices for a bunion vary. They depend on how severe your bunion is and how much pain it causes.
Often, surgery is not needed to relieve the pain and pressure of a bunion. Your health care team may recommend options such as:
You might need surgery if simpler treatments don't ease your symptoms. Surgery is recommended only when a bunion causes you frequent pain or limits your daily activities. Usually, it's not done to improve how your foot looks.
There are many surgeries for bunions. No one technique is best for every problem.
Surgeries for bunions can be done as single procedures or in combination. They might involve:
Depending on the surgery done, you might be able to walk on your foot right after a bunion procedure. But a full recovery often takes up to six months.
To keep another bunion from forming, you'll need to wear proper shoes. Most people shouldn't expect to wear narrower shoes after surgery.
Talk to a member of your health care team about what you can expect after bunion surgery.
You'll likely start by seeing your primary care doctor. Or you might see a foot doctor called a podiatrist or an orthopedic foot specialist.
Prepare a list of questions before your appointment. This helps you make the most of your time with your health care team. Your questions might include:
Feel free to ask any other questions during your visit.
Some questions your health care professional might ask include:
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