Photobiomodulation Therapy and Nerve Density for Patients With Diabetic or Chemotherapy-associated Neuropathy

This study seeks to determine if photobiomodulation (PBM, or low level laser light) affects the growth and distribution of nerves int he skin. Our previous study demonstrated that the treatment we use here was effective at reducing the symptoms of neuropathy (as measured by the modified total neuropathy score) in patients who had been treated with chemotherapy. The current effort is designed to repeat this confirm this observation using a more extensive battery of survey as well as to begin to elucidate the mechanism through which photobiomodulaiton produces the effect. WE will also be attempting to determine if diabetic patients differ in terms of response from chemotherapy patients