Spinal Cord Stimulation (SCS) has been in use for nearly 50 years. SCS systems use a small battery and thin, flexible wires called leads. The stimulator delivers a mild electric current through the leads to mask pain signals from reaching the brain. A remote control allows you to increase or decrease the level of stimulation, turn it on and off, and target different areas in your back, legs, neck, or arms using programs specifically designed for you. This stimulation does not get rid of what is causing the pain. It changes the way the brain perceives it. SCS therapy may use a gentle tingling sensation, called paresthesias, to replace the pain. Other forms of SCS use higher frequencies that do not create any paresthesia. The amount of pain relief achieved is different for everyone, but the therapy is considered successful if it reduces your pain by at least 50%, improves your level of function by 50%, or if you are able to reduce medication use by 50%.