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TENS Pain Control: What It Is & the Mechanisms of Action

A female news anchor reporting about TENS as a new faster pain relief

Transcutaneous Electrical Nerve Stimulation or TENS for pain control is a method of pain relief. It involves using an electronic device to send electrical currents to the body. Accordingly, this electrical stimulation works in various mechanisms of action. It interrupts the transmission of pain messages and triggers the release of endorphins. Additionally, the electrical impulses can stream in different frequencies and intensities. Nevertheless, the approach aims to provide relief without invasive techniques.

Pain management is a crucial aspect of healthcare. Different pain characteristics affect millions of people. It impacts daily activities and the overall quality of life. Traditional forms of pain relief may include physical therapy and medications. However, they may not provide adequate relief or come with unwanted effects. Fortunately, TENS offers a safe and effective management of pain. It gives positive outcomes. This article will present TENS for controlling pain, its mechanisms of action, and the treatable types of pain.

What is TENS for Pain Control?

TENS for pain control is a therapeutic technique that involves using an electrical device that delivers electrical pulses to the body. It sends electrical currents through electrode patches placed on the skin. Accordingly, pain clinics, healthcare professionals, and individuals with pain seeking a method of pain relief commonly use TENS. It is due to its effectiveness and ease of application.

The TENS devices come in both wired and wireless varieties. Wired TENS units connect the electrodes to the device via lead cables. These are often more traditional and affordable. On the other hand, wireless TENS units offer greater freedom of movement and convenience. It eliminates the need for wires connecting the electrodes to the device. It uses wireless technologies like Bluetooth.

Conducting TENS therapy is straightforward. Begin by identifying the area of the body experiencing discomfort. Then, prepare the skin over it and place the electrode pads. Follow the proper electrode placement for effective relief. Next, turn on the TENS device. Finally, adjust the settings. Start with the lower settings and gradually increase it to a comfortable intensity.

Benefits of TENS Therapy

  • Targeted relief: Individuals can place the electrode patches near or directly on the area of discomfort.
  • Non-invasive: It bypasses the need for incisions, injections, surgical procedures, or invasive processes.
  • Non-pharmacological intervention: TENS can treat discomfort without relying on pharmacological agents. Hence, it eliminates the potential adverse effects or dependency risks.
  • Adjunct treatment: It can be used alongside other therapies or modalities to enhance pain relief.
  • Customisability: Users can adjust the parameters of stimulation. They can modify the pulse rate, intensity of stimulation, and pulse duration.
  • Cost-effective: It provides ongoing relief without the continual cost of medication or frequent visits to healthcare providers.

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Mechanisms of Action Behind TENS for Pain Control

TENS for pain control works through various mechanisms of action to provide analgesic effects. Foremost, TENS encourages the body to produce endorphins. These natural chemicals in the body act similarly to medications but without side effects. Endorphins bind to opioid receptors in the brain and spinal cord. Hence, it promotes a reduction in pain intensity and induces feelings of well-being.

Secondly, the pain gate mechanism is crucial in how TENS alleviates discomfort. It is based on the idea that the nervous system can only carry limited sensory information. TENS works by sending non-painful signals. Thus, it effectively closes the “gate” to painful input. The brain pays more attention to the sensation of electrical pulses than to the feeling of discomfort. It provides an immediate level of pain relief.

In addition, TENS improves blood circulation. It is essential for healing and relief. The electrical currents encourage the dilation of blood vessels. It increases blood flow to the treatment region. Enhanced blood circulation delivers more oxygen and nutrients to the tissues. Accordingly, it removes waste products and reduces inflammation. Nevertheless, the activity provides relief and speeds up the healing process.

Frequencies and Intensities

TENS employs varying frequencies and intensities to control discomfort. Frequencies refer to the number of electrical impulses delivered over a second. It is measured in Hertz (Hz). Accordingly, TENS can operate at low (1-10 Hz) and high (50-120 Hz) frequencies. Low-frequency TENS aims to stimulate the production of endorphins. Meanwhile, high-frequency focuses on blocking pain signals.

On the other hand, intensities correspond to the strength of the electrical impulses. It is measured in Milliamperes (mA). The intensity level is adjustable and is set depending on the comfort level of the individual. Finding adequate intensities is crucial for maximising the benefits of TENS.

A woman holding her lower back due to pain while sitting in a bed

Types of Pain Treated with TENS for Pain Control

TENS for pain control can effectively treat various types of pain. Foremost, TENS therapy can manage acute pain conditions. It is often sharp and short-lived. It can arise from primary dysmenorrhea, tension headaches, and sports injuries. Secondly, TENS can address chronic pain conditions. It persists over an extended period. It may include neck pain, arthritis pain, backaches, and fibromyalgia.

Thirdly, TENS treatment can aid musculoskeletal pain. It affects the bones, muscles, ligaments, and tendons. It may involve knee pain, rheumatoid arthritis, and joint pain. Fourthly, TENS is beneficial for treating neuropathic pain. It arises from damaged or malfunctioning nerves. Medical conditions like sciatica, diabetic neuropathy, and phantom limb pain fall into this category.

Moreover, TENS can mitigate muscular discomfort. It includes muscle spasms, cramps, and stiffness. Adjusting the frequency and intensity of stimulation can stimulate muscle relaxation. It can ease stiffness and reduce the occurrence of spasms and cramps. Overall, TENS stands out as a comprehensive pain management tool capable of addressing various pain types.

Are There Potential Side Effects?

While TENS is generally safe and effective, there are potential side effects that users should be aware of. Skin irritation occurs when electrodes cause discomfort or rash on the skin. To mitigate this risk, it is advisable to check the skin regularly and ensure they are clean before application.

Allergic reactions represent another potential side effect. Users with known allergies should opt for a hypoallergenic electrode patcher or alternative materials. Additionally, muscle twitching during a TENS session can occur. While it is normal, excessive twitching may be uncomfortable. Adjusting the device to a comfortable setting can alleviate this issue.

Conclusion

Overall, TENS for pain control is a valuable and effective tool. It is a technique that involves using a device to deliver electrical pulses to the nerves. Consequently, this electrical stimulation operates through various mechanisms of action. It includes the Gate Control Theory of Pain and the Endorphin Release Theory. Also, TENS can help improve blood circulation in the treatment area. Additionally, TENS employs varying frequencies (low and high) and intensities (adjustable to a comfort level).

Furthermore, TENS therapy boasts numerous benefits. It is non-invasive, non-pharmacological, customisable, cost-effective, provides targeted relief, and can be an adjunct intervention. Moreover, TENS treatment can address various pain types. It can manage conditions like primary dysmenorrhea, fibromyalgia, rheumatoid arthritis, diabetic neuropathy, and muscle spasms. However, while TENS treatment is safe and effective, users should be aware of the potential side effects of TENS therapy.

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