How does electrotherapy work?
Electrotherapy units used by a doctor of chiropractic are usually a battery-powered device connected by wires to adhesive electrode pads that are placed on the skin. These small, adhesive pads deliver a mild electric current to the skin when the unit is turned on.
While the concept of sending electricity into the body sounds painful, most patients find the tingling, buzzing, or vibrating sensation to be relaxing. The adhesive pads may cause minor skin irritation after being removed, and in some instances, patients may feel a mild stinging after therapy.
It is unclear if electrotherapy directly blocks pain signals from your nerves to your brain, or if it simply encourages the release of natural pain-killing endorphins.