Here and there I have warts - what are the preliminary symptoms?

Is this a warning sign that only I don't know about?

Why do corns develop here and there?

It may look small, but it has roots and is hard.

I keep touching and tearing at it because it bothers me.

Why do corns keep coming back even after shaving them off with nail clippers when I take a shower or my hands and feet get wrinkled in water? I'm worried.

Now that I think about it, my hand, foot, and sole are all on the right side.