The first is probably corns, corns are usually caused by extrusion, and are often found in the parts of the toe that are under stress, and the painful parts can also be seen as clear boundaries of yellowish, or dark yellow conical keratin rings with smooth surfaces. Second, may be toe infection, infection will appear local red, swollen, hot, pain, abscess is not formed when the mass is hard, abscess mature mass will become soft, need to incision and drainage, plus anti-inflammatory drug treatment. At the same time, you need to eat a light diet and avoid spicy and stimulating foods.