A bunion is a swelling near the end of the joint in the foot that attaches to the big toe. The foot bone moves outward, forcing the big toe inward. This movement causes swelling, pain, and eventually a bony growth.
Severe bunions can become very painful, hindering a person's ability to walk.
Bunions can be inherited, and anyone with flat feet is at risk to get them. Poorly fitted shoes that are too small, too tight, and too narrow are the primary cause of bunions. High-heeled shoes with pointed toes are the main offenders for women. For this reason, women are more prone to bunions than men. Bunion treatment includes wearing good shoes that follow the shape of the foot, provide ample toe room, and have a low heel.