Active stimulation will be compared with compared to SHAM stimulation in DNP patients.
20 DNP patients, 10 per group, receive stimulation or sham for 5 consecutive days, 20 min/day, followed by 2, 4, and 6 weeks post-therapy. 9 visits plus screening/baseline (total 10 visits).
Subsequently, 40 DNP patients will be enrolled, 20 per group, giving 5 consecutive days, 20 min/day, followed by 2 weeks of bi-weekly stimulation or sham for 20 min/day (total stimulations n=9) and follow-ups at 2, 4, 6, \& 8 weeks post-stim): 13 visits plus screening/ baseline (total 14 visits).
