Is it Calmare or Scrambler Therapy??? 1 Recruiting MC5-A Scrambler Therapy or TENS Therapy in Treating Patients With Chemotherapy-Induced Peripheral Neuropathy Conditions: Pain; Peripheral Neuropathy Interventions: Other: Laboratory Biomarker Analysis; Other: MC5-A Scrambler Therapy; Other: Questionnaire Administration; Other: Transcutaneous Electrical Nerve Stimulation 2 Completed Has Results MC5-A Scrambler Therapy in Reducing Peripheral Neuropathy Caused by Chemotherapy Conditions: Pain; Peripheral Neuropathy Interventions: Other: scrambler therapy; Procedure: sham intervention; Other: questionnaire administration 3 Recruiting MC5-A Scrambler Therapy for the Treatment of Chronic Neuropathic Extremity Pain Conditions: Peripheral Neuropathy; Low Back Pain Interventions: Device: MC5-A Scrambler Therapy; Device: MC5-A Scrambler Therapy Sham Device 4 Active, not recruiting Scrambler Therapy in Treating Chronic Pain in Patients With Rash From Varicella Zoster Virus Infection Conditions: Dermatologic Complications; Pain; Viral Infection Interventions: Other: scrambler therapy; Other: questionnaire administration; Procedure: dermatologic complications management/prevention 5 Completed Scrambler Therapy in Treating Pain and Peripheral Neuropathy in Patients Previously Treated With Chemotherapy Conditions: Pain; Peripheral Neuropathy Interventions: Other: scrambler therapy; Other: questionnaire administration; Procedure: management of therapy complications 6 Recruiting Scrambler Therapy in the Treatment of Chronic Chemotherapy-Induced Peripheral Neuropathy Condition: Neuropathy Interventions: Device: Scrambler Therapy; Device: Sham Therapy 7 Completed Has Results Trial of Scrambler Therapy or Sham Treatment for Low Back Pain Condition: Low Back Pain Intervention: Device: Scrambler 8 Completed MC-5A for Chemotherapy Induced Peripheral Neuropathy Condition: Neuropathy, Paraneoplastic Interventions: Device: MC-5A; Drug: Sham device 9 Completed Has Results Electrical Stimulation Therapy Using the MC5-A Scrambler in Reducing Peripheral Neuropathy Caused by Chemotherapy Conditions: Chemotherapeutic Agent Toxicity; Neurotoxicity; Pain; Peripheral Neuropathy; Unspecified Adult Solid Tumor, Protocol Specific Interventions: Other: questionnaire administration; Other: Sensory Neuropathy Scale instrument; Other: Quality of Life instrument; Device: MC5-A Scrambler device