Painful pressure on the medial side of the heel may be caused by several reasons: First, there may be an injury related to the heel bone. For example, patients often perform long-distance walking and running, which may cause some contusions of the heel bone or even fatigue fractures. At this time, there may be obvious pressure pain when pressing on the medial side of the heel. In addition, if the patient falls from a high place or does some running or jumping activities frequently, it may also cause damage to the heel bone, which may lead to such symptoms. In addition, if the patient has some old fractures of the heel bone, then after recovery, such symptoms may also remain. Second, caused by some muscle fatigue in the foot. For example, after a long period of standing or walking for a long distance, some intrinsic muscles of the foot may become fatigued. At this time, when pressing on the inside of the heel, these muscles may be touched, and then produce obvious pressure pain. Third, it may also be caused by the metatarsal tendonitis here. These diseases are often seen in patients who walk excessively, resulting in a sterile inflammation of the metatarsal tendon membrane. In this case, there is a very pronounced pressure pain in the area where the metatarsal tendon membrane meets the heel bone, which is the medial side of the heel.