Therapeutic measure used in medicine to generate heat in the body tissues. Electrodes and other instruments are used to transmit electric current to surface structures, thereby increasing the local blood circulation and facilitating and accelerating the process of absorption and repair.

It increases the blood flow to the areas that need more blood to bring in white blood cells and red blood cells and antibodies to reduce infection and cause increased healing in a much shorter period of time. It is used a lot for pain syndromes, sinus infections, ear infections, bronchitis and pneumonia.