A bunion is a misaligned big toe joint that can become swollen and tender, causing the first joint of the big toe to slant outward, and the second joint to angle toward the other toes. Bunions tend to be hereditary, but can be aggravated by shoes that are too narrow in the forefoot and toe. In addition, biomechanics can cause bunions if the foot over pronates or is extremely flat.
If the bunion is not painful, then accommodations such as shoes that will allow room for the bunion may be an easy treatment. However, if the bunion is painful or is affecting your life or activities, bunion surgery may be recommended by your doctor.