Corns are caused by prolonged pressure and friction on the skin of the feet. Treatment for corns usually includes surgery, physical therapy, medication and so on. 1. Surgery: If the corns are stubborn, they can be treated by excision or digging out. 2. Physical therapy: Generally, laser, freezing, electrocautery and other physical methods can be used for treatment. 3. Medication: If the symptoms of corns are mild, you can apply salicylic acid and other medications externally. It is worth noting that, due to the degree of disease and individual differences, treatment measures vary from person to person. Therefore, it is recommended to go to the hospital in time, choose the appropriate treatment plan under the guidance of the doctor, and avoid unauthorized use of medication.