Many electrotherapies and heat therapies aren’t free from adverse side effects and require professional monitoring. The side effects of the TENS unit are almost nonexistent. These units are portable and easy to carry around. TENS units are normally battery operated and hence quite safe to apply. The user just has to select the preferred therapy session from the menu and place the electrodes in the appropriate areas. For a therapy session, all the settings are stored in the memory. The latest TENS units incorporate microcontrollers and these devices are programable. The most attractive feature of TENS units is simplicity and convenience. More rigorous clinical studies and randomized clinical treatments are needed to evaluate the effectiveness of TENS for more concrete evidence. TENS units may be helpful in symptoms such as period pain, lower back pain, joint pain, and postoperative pain.

This therapy also showed tentative positive results in the case of diabetic neuropathy, arthritis, fibromyalgia, and multiple sclerosis pain management. Ultra-low frequency TENS is used to diagnose and treat jaw joint dysfunction. The TENS unit is extensively used in dentistry. The waveshape and frequency of the current may vary depending on the nature of the therapy and this current is applied to the affected area through electrodes and usually, the device includes a battery to supply electric power. This is a type of electrotherapy and all electro therapies have some common features such as application of electric current to the affected areas. TENS stands for Transcutaneous Electrical Nerve Stimulation. Since numerous TENS units from different manufacturers can be found in the market, it may be a tricky business to find the right TENS device sometimes. So, this device will not be able to eradicate pain completely other than easing the condition and relieving the excruciating pain for some time. It also stimulates endorphin production which acts as the natural pain killer. TENS unit mimics this idea and it is an electrical device used to stimulate nerves using electrical impulse which reduces the pain signal passing through nerves. In ancient Rome, 63 A.D., people used to stand on an electrical fish at the seashore for pain relief. Surprisingly, using electrical stimulation for pain treatment is not a new concept.

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