If the callus is very painful, or if you have diabetes, fragile skin, or circulatory problems, it is best to consult a doctor or a podiatrist, who is specialized in foot care.
A foot or posture specialist may help correct abnormal gait by checking your footwear or identify an underlying bone structure problem. In the latter case, you may be referred to undergo an X-Ray or even a surgical procedure.
A podiatrist, or foot doctor, may remove some of the hard skin using a scalpel. Do not attempt to do this at home.
If there is infection or a risk of infection, the doctor may prescribe an antibiotic ointment. Red and swollen skin around the callus can indicate an infection.