Pain machine, tens unit, tns machine, interferential therapy, whatever,  how does a tens unit work?  This short tens video  details the way a tens unit reduces or eliminates pain.  Pain is an impulse and whatever the mechanism is for moving the impulse from the area to the brain for perception is basically the same, no matter what the diagnosis is.

   Enjoy this tens video on how a tens unit, pain machine, works with our body to stop pain.