Spinal cord stimulation (SCS) is a treatment for long-lasting (chronic) pain that has not improved enough with medications, physical therapy, or other treatments. It uses a small implanted device to send gentle electrical pulses to the spinal cord. These pulses change the way pain signals travel to your brain, which can lower the amount of pain you feel.
SCS does not cure the condition causing your pain. Instead, it helps manage the pain so you can move more easily, sleep better, and do more of your daily activities. For some people, it can also reduce the need for pain medications.
Your spinal cord carries signals between your body and your brain, including pain signals. In SCS, thin soft wires (called leads) are placed in the space near your spinal cord. These wires are connected to a small battery-powered device (called a pulse generator) that sits under your skin, much like a heart pacemaker.
The device sends mild electrical signals to the spinal cord. This interferes with the pain messages before they reach the brain, so your brain receives a weaker pain signal. Some older systems create a gentle tingling feeling (called paresthesia) in the area where you usually feel pain. Many newer systems can relieve pain without any tingling sensation at all.