TENS: Indication, Contra-indication, & Dangers
Transcutaneous Electrical Nerve Stimulation(TENS): TENS is the use of electric current produced by a device to excite the nerves for therapeutic constancies.The TENS unit is habitually connected to the skin using two or more electrodes. TENS are usually used for nerve related acute and chronic pain conditions. TENS machines serve by sending stimulating pulses across the surface of the skin and along the nerve strands.The exciting pulses assist prevent pain signals from reaching the brain.Tens devices also further stimulate your body to engender higher levels of its own natural painkillers, known as “Endorphins”. While the use of TENS has established effective in clinical studies, there is controversy over which circumstances the device should be applied to treat.
It is a technique of neuromodulation that affects the sensory pathway by modifying the impulse which leads to relief of pain.
Types of TENS
(i) Continuous or conventional TENS (High frequency and low intensity).
(ii) Pulsed or burst TENS (Low frequency and low intensity).
(iii) Acupuncture-like TENS (Low frequency and high intensity).
Tens or transcutaneous electrical nerve stimulation is the alternative way for the purpose of relieving pain. Tens machine which is operated by a battery.TENS Unit is quite useful and helpful for relief in pain. TENS Unit delivers small electrical pulses of little electrical like some sensation shocks which are transmitted to the body which helps in curing certain types of pain. TENS stands for transcutaneous electrical nerve stimulation delivered to the body with the help of connected electrodes which reaches the brain via nerves and the spinal cord. The TENS Unit machine works in two different ways:
In the normal mode method where the frequency is within 90 Hz to 130 Hz. The mechanism is that there is some sort of path within the brain and nerve system. If the path has no blockage, the signals of pain reach the brain and we get the sensation to feel the pain but on the opposite, when the gate is closed, the pain messages are being blocked and we get no sensation of pain, gets relief from pain.
In a low pulse frequency is between 25 HZ, the device stimulates the body to make its own pain relief chemicals perceived as endorphins which may be contrasted to morphine to block pain signals.
Indication of TENS
Contra-indications of TENS
- Skin irritation
- Unpleasant sensation
- Influence on the cardiac pacemaker
- Stimulation of sensitive carotid sinus nerves
- Altered sensation
- Spasm of laryngeal and pharyngeal muscles
- Removal of protective influence of pain
- Neurotic addiction to stimulation
- Destruction of operators of dangerous machines
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