A Spinal Cord Stimulator (SCS) or Dorsal Column Stimulator (DCS) is a type of implantable neuromodulation device (sometimes called a "pain pacemaker") that is used to send electrical signals to select areas of the spinal cord (dorsal columns) for the treatment of certain pain conditions. SCS is a consideration for people who have a pain condition that has not responded to more conservative therapy.In the United States, Failed Back Surgery Syndrome is the most common use while in Europe the most common use is peripheral ischemia.As of 2014 the FDA had approved SCS as a treatment for failed back surgery syndrome (FBSS), chronic pain, Complex Regional Pain Syndrome, intractable angina, as well as visceral abdominal and perineal pain and pain in the extremities from nerve damage.