 NeuroMetrix, Inc. NURO today announced that Quell technology has been selected for use in a large, NIH-funded, randomized, pragmatic clinical trial of TENS for fibromyalgia. Fibromyalgia is a disorder characterized by widespread musculoskeletal pain accompanied by fatigue, sleep and mood disturbances. Although several drugs are approved for treating fibromyalgia pain, there is an unmet need for safe, non-pharmacological options. 