A bunion, also known as Hallux Valgus, is a bone deformity caused by an enlargement of the joint at the base and side of the big toe. Bunions form when the toe moves out of place, angling toward the other toes. In some cases, the big toe even moves under or over the second toe. Many people with bunions suffer from discomfort and pain from the constant irritation, rubbing, and friction of this bony prominence against shoes. The skin over the toe becomes red and tender. Because this joint flexes with every step, the bigger the bunion gets, the more it hurts to walk. Over time, bursitis or arthritis may set in, the skin on the bottom of the foot may become thicker, and everyday walking may become difficult—all contributing to chronic pain.