The characteristics of bunion pain symptoms are as follows: First, the nature of the pain is mainly soreness and swelling. Secondly, the onset of pain is often continuous. The pain may increase after cold or excessive activity. Third, the site of the attack is most common in the first metatarsophalangeal joint. In addition, there may be attacks on the medial side of the first metatarsophalangeal joint and the dorsal side of the second and third toes. The reason for these attacks is that the bunion causes a localized bone protrusion that rubs against the inside of the shoe, resulting in pain. Fourth, the pain of a bunion is directly related to the degree of deformity. If the deformity is mild, there may be no pain at all. If the deformity is very severe, it can rapidly develop into osteoarthritis of the first metatarsophalangeal joint along with the pain.