Dr.Ho's Pain Therapy System combines Transcutaneous Electrical Nerve Stimulation (T.E.N.S), Electrical Muscle Stimulation (EMS) and Pulse Massage to help stimulate the nerves and muscles. This helps relieve pain and improve circulation. This device is recommended for: pain, muscle tension, fibromyalgia, poor circulation, arthritis, injuries, and accidents. Medical professionals such as Physical Therapists and Chiropractors have used Transcutaneous Electrical Nerve Stimulation (TENS) therapy for over 30 years.