At around February of this year I found a heard lump of skin on my finger (I think it was a callus, which I have had before in my hand which I picked off and it went away) and I picked it thinking it would go away but now I still have a scab that is almost like a wart as it is raised and I kept picking it and decided that was the problem and stopped. This was until Reuther I picked it and it looked like it has gone away however today I have noticed it starting to come back what should I do?