Walking, running and even standing put a lot of stress on your feet and ankles, putting them at high risk for injury. Poorly fitting shoes and age can lead to problems such as calluses, corns, bunions, fungus, ingrown toenails, bone and heel spurs and blisters. Underlying health conditions such as gout, osteoarthritis and diabetes can lead to chronic foot pain and lack of mobility. Infection, disease, trauma and sports injuries can also cause problems, and can ultimately damage the structure, appearance and functionality of your feet.