The callus on the outside of the little toe hurts when you touch it, which may be caused by corns, calluses, metatarsal warts, etc. It can be removed by physical therapy, surgery, and other methods. 1. corns: the outer side of the little toe is subjected to long-term pressure and friction, resulting in the occurrence of corns, which can be removed by physical means such as carbon dioxide laser, liquid nitrogen freezing, etc., and corns can be removed by corns digging surgery in serious cases. 2. Callus: commonly known as callus, also caused by long-term friction, generally no treatment, by reducing the pressure and friction can gradually improve, if necessary, through the application of salicylic acid ointment, or combined with physical therapy, such as laser, freezing, or cutting surgery, etc. Relief. 3. Plantar warts: These are caused by human papilloma virus infection and can be removed by physical means such as carbon dioxide laser and liquid nitrogen freezing. This symptom may also be caused by other reasons, you should go to the hospital in a timely manner, to clarify the cause of the disease, under the guidance of the doctor’s medication, avoid unauthorized use of drugs or treatment.