Foot seam long hard boils consider the possibility of foot long corns, the formation of this disease and the foot skin is subject to long-term mechanical stimulation, such as friction, pressure, etc. caused by limited, keratin overgrowth related. Specifically, long-term wear ill-fitting, too tight shoes will compress the foot; long-term wear high heels, making the foot pressure and friction enhancement; long-term standing or walking people, foot skin pressure friction, etc. are greater; foot deformity of the person suffering from corns of the risk is greater, such as bunions, foot spurs, etc.; wear shoes without socks, foot skin friction is also more. All of the above situations are easy to induce the foot skin to appear limited, keratin overgrowth, which in turn induces the generation of corns. In addition, hard boils on the seams of the feet may also cause plantar warts, a disease caused by human papilloma virus infection, which is contagious. It is recommended that patients with hard boils on their feet should go to a regular hospital in time to get a clear diagnosis and standardized treatment under the guidance of a doctor.