Corns are localized thickening of the cuticle caused by the patient wearing shoes that do not fit them for a long time. Therefore, corns usually occur on the outside of the big toe, the outside of the little toe, the back of the toe, and the heel. For patients with mild corns, they can slowly relieve themselves if they wear comfortable, breathable sports shoes and reduce the pressure and friction on the foot. But corns do not usually appear on the bottom of the foot, where the corns are thickened: the first condition is callus. Callus is a thickening of the cuticle on the front of the foot due to the patient walking for a long time. Calluses can also slowly resolve on their own when the patient reduces walking, pressure, and friction. The second condition, plantar warts, is a benign superfluous epidermis caused by HPV virus infection, plantar warts usually do not resolve on their own. The actual fact is that you will be able to find out what you are looking for on the bottom of your feet.