Either your nerves have completely shut down, or you aren't getting the right amount of blood flow. My remedy:
Stand up perfectly straight. Lift out your arms, as if you're making a 'T' with your body. Unfold your hands. Now, start swaying your arms up and down. Gradually, accelerate the speed of the swaying.
Now, try touching something. If you still can't feel anything, contact a neourologist right away.