you may have a planters wart. if it will not go away they treatment may not be on long enough. if you go to the doctor they may remove the wart temporarily but not completely. you can try the pads such as dr. scholl's planter wart removers. they contain a type of acid that remove the entire wart. you do have to leave them on for a while. hope this helps. i have had one before and they are annoying but if you keep the medicine on long enough they will go away.
i have a planters wart looking spot on my foot dr. said it's a pluged sweat glan. they keep cutting the center of it out but it's sore 90% of the time. would like to know more about it and what can be done.