I am a huge fan of 70s and 80s lead guitarists, and I play tapping leads often, sometimes for hours. I don't know if this happens to others but I find that the next day after a long tapping session the first knuckle on my pinky finger tends to be red and sore. I don't know if its from the stretching across many frets or the repetative beating on the fretboard, but thats my biggest problem.

-Mai Zure