Corns about the toes are certainly painful. Corns are brought on by an excessive amount of force on that area of the toes and the epidermis just thickens up to protect itself, then becomes so thick that it can be then painful. The causes of that increased pressure are many and might be because of a bony deformity, a claw toe or a bunion. A competent podiatrist could easily remove a corn, but if the pressure which created the corn remains, then it is probably going to come back. For the best results long term, the actual cause of the corn really should be determined and that reason taken away. Sometimes that will require surgery to fix the underlying bone or toe disability. Other times that could necessitate the wearing of padding for force relief over the area. In most cases, a vast improvement in the fit of shoes are one of the better ways to get load off an area.
A great way to self manage these problems is to get rid of the pressure. You will find protective pads that you can use such as the toe foams. They are a soft foam made from polyurethane using a cloth backing. They come in longer tubes so that you or the podiatrist can cut these to the required length to place on the toe to cushion and protect it. Several of the toe foams include a increased thicker area on one side to get more protection. They tend to be used more in the short to medium terms since they are soft, they are not that resilient. When they are useful and require to be used more in the long term certainly they are going to need to get replaced often. Usually discuss the options with the podiatrist to see what they recommend as the things they believe are your better choices in the long term.