The most common symptom of pain on the side of the foot is trauma to the foot, where local friction produces soft tissue abrasions, contusions, cuts, etc. Especially when there is trauma to the foot with exostosis, it is very easy to cause excessive strain on the ligaments of the foot edge, which can cause edema. Even more so, fractures may occur and bone continuity may be disrupted, which may also cause significant pain and swelling around the foot edge, a condition that worsens when the foot is weight-bearing or during normal walking. It may also be due to strain on the side of the foot, especially when a person stands for a long time, or after a long period of squatting, running and jumping exercise activities, it is easy to cause the ligaments and joint capsule around the foot, as well as the muscles are subjected to excessive tension, which causes the occurrence of spasm, and excessive accumulation of muscle lactic acid can also lead to soreness. When a person rests, he or she may find pain in the side of the foot, or the pain may increase during normal activities after rest. There is also the possibility that a cold foot can cause muscle contraction spasms, resulting in pain on the side of the foot.