What is provided is a method and apparatus for blocking a pain signal by selectively electrically stimulating a mammalian nerve comprising: applying a dermal patch having an integral electrode in proximity to an A-alpha or A-beta touch sensitive nerve； determining a stimulation corresponding to the A-alpha or A-beta touch sensitive nerve, by logic of the dermal patch； applying the stimulation by the electrodes and a stimulator integral to the dermal patch to produce an electric field； and selectively activating the A-alpha or A-Beta touch sensitive nerve by the electric field.
