Severe pain, swelling, bruising, or inability to bear weight are alert symptoms that could indicate serious injury to a bone or ligaments. When accompanied by fever, an infection becomes a major concern. However, most people with foot pain have no serious or dangerous cause. In fact, many have pain due to poorly fitting or tight shoes; for women, high heels only make a tight shoe more uncomfortable. Try changing your footwear to something with more cushion, support and room for your feet -- and read on to learn more about the causes of foot pain.