According to MedicineNet, corns can be treated with medicated products that contain salicylic acid, a substance that dissolves the protein that makes up most of the corn. Salicylic acid treatments can be purchased as drops, pads, plasters and applicators.
WebMD suggests using pads to relieve the pressure on a corn as most corns typically disappear when the friction or pressure on them stops. If the corn developed due to a person having an abnormal foot structure, a podiatrist may recommend a shoe insert or even surgery to correct the foot deformity. Infected corns can be treated with oral antibiotics prescribed by a doctor.