MC5-A Scrambler Therapy for the Treatment of Chronic Neuropathic Extremity Pain

Inclusion Criteria: * military service members (active duty \& retirees) between the ages of 18 and 79, inclusive * neuropathic pain symptoms present for 3 months or greater prior to entry into the study * rated pain intensity equal to or greater than 3 on NRS-11 pain scale * painful peripheral neuropathy in an extremity that is the result of a traumatic injury (post-traumatic/ post-surgical neuropathy, stump pain, entrapment neuropathy), or low back pain with radiculopathy * stable pain medication treatment regimen * able to speak and read English, understand the study procedures, and consent to study participation Exclusion Criteria: * pacemaker or other implantable devices * vena cava, aneurysm clips, coronary or other vascular stents * pregnancy via a pregnancy test * history of epilepsy, brain injury, symptomatic brain metastases * prior celiac plexus block, or other neurolytic pain control treatment, within 4 weeks * wounds or skin irritation in areas where the electrodes are required to be placed * cardiac ischemia within the previous 6 months * severe arrhythmia * documented history of moderate or severe traumatic brain injury * latex allergies * open wound over site of chronic pain * unable to stop anti-epileptic medications or gabapentin over 2 weeks of MC5-A ST treatment * history of electroanalgesia treatment (electroacupuncture, biomodulator, TENS) over last 30 days * participation in the study would delay the medical board (MEB) processing of the service member off of active duty status or would delay a return to duty status to their home unit. * metal implants such as cardiac pacemakers, automatic defibrillators, aneurysm clips, vena cava clips and skull plates