Touch is often classified as one of the traditional five senses, along with sight, hearing, smell, and taste. Touch is, in several ways, seemingly different from these other senses, however. For one thing, touch does not seem to have a single sense organ. The skin, of course, is the most plausible candidate sensory organ, but the skin itself is not sensory. Instead, the skin contains many different sensory systems. Many of them, like those that code for pain and itch, do not seem to be tied directly to the sense of touch. For instance, we don’t, at least in most contexts, seem to treat cutaneous pains as part of the sense of touch proper. The same seems true for itch, tingles, and twinges, though perhaps these seem more closely tied with touch. At any rate, they are not paradigm instances of tactual perception, and if they seem more closely tied to touch, then this is something in need of explanation.