What is the difference between a wart and a callus?
A wart is a viral infection of the skin that can have a cauliflower-like appearance, while a callus is thickened skin due to friction or pressure. Their appearances are very similar, but there are some differences. A wart is painful when you squeeze it from side to side and a callus can be painful when you apply direct pressure over the area. Also, a callus has skin lines (the lines that make up a fingerprint on your hand) that run through it, but in a wart the skin lines stop at the wart and then continue after the wart.
