Swelling of the foot, also known as a BUNION (6 letters), is a common condition that occurs when the big toe joint becomes enlarged and sticks out. It is usually caused by wearing tight or ill-fitting shoes, or by an inherited structural defect in the foot. Symptoms of a BUNION include redness, pain, and swelling around the big toe joint. Treatment for a BUNION may include wearing wider shoes, using orthotics, and taking anti-inflammatory medications. In more severe cases, surgery may be necessary to correct the deformity.