A bunion is a hard, bony bump that forms on the foot. They occur when the big toe joint bends inward toward the other toes. The bunion bump itself is a deformity in the bone on the outside of the toe.

These uncomfortable bumps affect about a third of all Americans, and they tend to get worse if left untreated. So it's important to pay attention to them.

You're at higher risk of developing a bunion if you are older, have arthritis or flat feet, have a job that puts a lot of stress on your feet, have a family history of bunions, wear shoes that are too tight or force your toes to squeeze together, or walk in a way that puts pressure on the joint at the base of your big toe.

If you often wear shoes that hurt your bunion, your first step may be to buy some new, more comfortable footwear. You can also apply ice to the affected area of your foot if you feel discomfort. A podiatrist can discuss additional options for you, including at home therapies, physical therapy, medications, or special shoe inserts to make walking more comfortable. Sometimes surgery is recommended.