What precisely constitutes a TENS unit?
A TENS unit is a device employed in the management of chronic pain through a therapeutic technique known as transcutaneous electrical nerve stimulation (TENS). This compact, battery-powered apparatus delivers low-voltage electrical impulses via electrodes placed on the patient's skin. Effective pain relief requires positioning the electrodes in proximity to nerves at the pain center or trigger points.
What is the function of a TENS unit?
Chronic pain is a condition that disrupts the normal response of your brain and nerves to pain. In this process, certain neurons in your brain activate pain, while others deactivate it. When your body is free from pain, there is a harmonious equilibrium between the neurons that cause pain and those that counteract it. Conversely, chronic pain arises from the overstimulation of pain-inducing neurons and the inadequate stimulation of pain-inhibiting neurons.
Both types of neurons carry out their functions by releasing neurotransmitters, chemicals that either transmit pain signals or inhibit them. The TENS machine administers electrical pulses at a frequency of 90-130 Hz to intercept and block pain messages en route to the brain. Consequently, the brain undergoes a recalibration, restoring the balance between the emissions of pain-causing and pain-canceling neurons. Notably, TENS devices exhibit their highest efficacy during activities such as walking, engaging in household chores, or exercising, setting them apart from other treatments for chronic pain.
Can a TENS unit induce muscle relaxation?
Once the electrode pads adhere to your skin, the TENS unit transmits electrical impulses to the pain center, generating a tingling sensation. These impulses intercept the pain signals en route to the spinal cord. Given that muscle spasms often accompany pain, as the pain diminishes, your muscles are expected to unwind.
What are the various types of TENS units?
When considering the purchase of a TENS unit, it's essential to reflect on the type of pain you intend to address. TENS units are segmented based on the following attributes:
Intensity Levels: The intensity level determines the strength of the electrical current emitted by the unit. Most units provide an intensity of 80mA, with higher levels typically prescribed by medical professionals.
Pulse Rate: The pulse rate gauges the speed at which electrical currents are transmitted from the device. Options range from 2-10 Hz for mild pain to 80-120 Hz for chronic pain.
Channels: TENS units come in single-channel, dual-channel, or quad units with four channels. More channels and wires allow for simultaneous targeting of different areas of the body.
Electrodes: Choose between wired or wireless electrodes to enhance your TENS unit experience.