Transcutaneous electrical nerve stimulation (TENS) is a self-operated portable device intended to help regulate and create chronic pain via electrical impulses. Limited research has explored the effectiveness of TENS in relation to pain management of Multiple Sclerosis (MS). MS is a chronic autoimmune neurological disorder, which consists of the demyelination of the nerve axons and disruption of nerve conduction velocity and efficiency. In one study, electrodes were placed over the lumbar spins and participants received treatment twice a day and at any time when they experienced a painful episode. This study found that TENS would be beneficial to MS patients who reported localized or limited symptoms to one limp. The research is mixed with whether or not TENS helps manage pain in MS patients.