What is TENS
TENS stands for Transcutaneous Electric Neuro Stimulation. It means that nerve functions can be affected by electric impulses leading through the skin. The electric impulses stimulate sensory nerves which then activate natural pain relief mechanisms. TENS can also be applied to muscles to relax them. This type of electrotherapy is either applied in short bursts, in waves, or in a continuous stream of impulses. Various electrodes can be used according to the need (pads, buttons or pen-like). The electrodes are usually placed close to the appropriate nerve root, which is not necessarily at the place where you feel the pain.
How TENS helps
Depending on the frequency of the very short impulses (these are typical for TENS), TENS may exhibit various effects: analgesic, muscle-relaxing or indirectly improving tissue metabolism. This treatment is especially effective for conditions that require acute or chronic pain relief, particularly on the back or neck. TENS can be further used to decrease the tone of stiff and overloaded muscles as well as to treat painful trigger points.