A bunion forms when your big toe points toward the second toe. This causes a bump to appear on the inside edge of your toe.
Bunions are more common in women than men. The problem can run in families. People born with abnormal bones in their feet are more likely to form a bunion.
Wearing narrow-toed, high-heeled shoes may lead to the development of a bunion.
The condition may become painful as the bump gets worse. Extra bone and a fluid-filled sac grow at the base of the big toe.