While playing around with skin textures and hair particles I figured out a quick way to make warts with hair. Just duplicate the hair particle system and make the hair on the copy short, with a wide base and the same texture as the skin. It still needs a bit of tweaking but I’m happy about the results so far. One problem I’m having with the hair particles is that the base isn’t connected to the emitting mesh so there’s a small shadow below some of the warts. Pic and .blend attached.
hudklump_new_bumped.blend (1.25 MB)