Callus on the palm of the foot is called callus in medicine, usually not a part of the body out of the problem, but by the long-term pressure on the skin, occupational factors, their own physical condition, shoes are not suitable and other factors. 1. Long-term pressure on the skin: If you wear small shoes, or shoes with hard texture, it is easy to lead to long-term friction or pressure on the skin of the foot, the formation of callus, manifested as a hard yellow plaque on the palm of the foot, localized pressure and pain and other symptoms. 2. Occupational factors: If you are engaged in some occupations that require long time standing or walking, such as teachers, hairdressers, restaurant waitresses, etc., the chances of callus are relatively high, especially after wearing ill-fitting shoes or high-heeled shoes, it is more likely to cause callus. 3. Physical condition: some of the elderly body’s blood circulation is not smooth, the skin’s nutrient supply is insufficient, there will be rough skin, callus phenomenon of the foot. 4. Foot bone deformity: If the foot bone deformity, easy to cause the foot skin is more susceptible to long-term friction, callus. Calluses on the palms of the feet is usually not a physical problem, it is recommended that patients according to their own situation, if necessary, to the regular hospital dermatology consultation and treatment. Usually wear some comfortable shoes and socks to reduce the friction of the skin.