Chronic pain conditions such as fibromyalgia remain challenging to manage, especially when pain intensifies during movement. A newly published clinical trial in JAMA Network Open explores whether adding transcutaneous electrical nerve stimulation, commonly known as TENS, to physical therapy can improve outcomes for patients. The findings provide encouraging evidence that this simple, non drug treatment may significantly reduce pain and improve daily function.
Fibromyalgia is a long term condition characterized by widespread pain, fatigue, poor sleep, and cognitive difficulties. One of the most frustrating aspects for patients is movement evoked pain. Even basic activities such as standing up, walking, or exercising can worsen discomfort. This creates a cycle where people avoid movement, leading to reduced physical function and overall quality of life.
Current treatment guidelines emphasize non pharmacological approaches, especially exercise and physical therapy. However, adherence is often low because movement itself triggers pain. This is where TENS may offer a practical solution.
Transcutaneous electrical nerve stimulation is a therapy that delivers mild electrical impulses through electrodes placed on the skin. These impulses stimulate nerves and can reduce pain by activating the body’s natural pain inhibiting systems. Researchers believe TENS works by decreasing the sensitivity of pain pathways in the central nervous system.
TENS devices are portable, relatively inexpensive, and widely used in rehabilitation settings. Despite this, real world evidence on their effectiveness for fibromyalgia has been limited until recently.
The study, known as the Fibromyalgia TENS in Physical Therapy study, was a large cluster randomized clinical trial conducted across 28 outpatient physical therapy clinics. Researchers screened nearly 1,000 individuals and enrolled 459 participants diagnosed with fibromyalgia. Ultimately, 384 participants completed baseline assessments and were included in the main analysis.
Participants were divided into two groups:
After 60 days, the second group was also given access to TENS for continued observation.
Participants were instructed to use TENS for about two hours daily, particularly during activity. Pain levels were measured using a standard 0 to 10 scale during a repeated sit to stand task, which reflects movement related discomfort.
The results showed a clear benefit of adding TENS to physical therapy. After two months, participants using TENS experienced a statistically significant reduction in movement evoked pain compared to those receiving physical therapy alone.
The average reduction in pain was modest but clinically meaningful. Importantly, the improvement was not short lived. Pain relief was sustained for up to six months, indicating lasting benefits with continued use.
In addition to reduced pain, several other positive outcomes were observed:
A notable finding was that about 41 percent of participants using TENS achieved at least a 30 percent reduction in movement related pain, which is considered a meaningful clinical improvement.
The study also found a dose response relationship. Participants who used TENS more consistently experienced greater reductions in pain. This suggests that regular use is key to maximizing benefits.
By the end of the six month period, most participants reported that TENS was helpful, and more than half were using it daily. This highlights both effectiveness and patient acceptance, which are critical factors in long term treatment success.
Safety is always an important consideration in chronic pain management. The study reported no serious adverse events related to TENS use. Some participants experienced mild side effects such as skin irritation, discomfort, or itching at the electrode site. These were generally minor and manageable.
Compared to many pharmacological treatments, which can carry risks of dependency or systemic side effects, TENS appears to be a low risk option.
This trial stands out because it reflects real world clinical practice rather than a tightly controlled laboratory setting. Physical therapists delivered the treatment as part of routine care, and participants represented a diverse patient population.
The findings suggest that TENS can be effectively integrated into standard rehabilitation programs. It may help patients overcome one of the biggest barriers to recovery, which is pain during movement.
By reducing discomfort, TENS could enable greater participation in exercise and daily activities, ultimately improving long term outcomes.
Fibromyalgia is a complex condition that often requires a multidisciplinary approach. Treatment typically includes a combination of:
TENS does not replace these approaches but can complement them. It offers a self managed tool that patients can use at home, especially during activities that would otherwise be painful.
For individuals struggling to stay active بسبب pain, TENS may serve as a bridge that makes movement more tolerable.
While the results are promising, there are some limitations. The study did not track changes in medication use, so it is unclear how TENS may influence reliance on drugs. Additionally, the participant population was predominantly female and lacked broader racial diversity, which may affect generalizability.
Another point is that physical therapy alone did not show strong effects in this trial, possibly because treatment was not always tailored specifically to fibromyalgia.
The growing evidence suggests that TENS is a practical, safe, and effective addition to fibromyalgia care. Its ability to reduce movement related pain addresses a critical gap in current treatment strategies.
For patients and clinicians alike, this study reinforces the value of combining therapies rather than relying on a single approach. With minimal risks and increasing accessibility, TENS may become a more widely adopted tool in managing chronic pain conditions.
Dailey DL, Vance CGT, Van Gorp BJ, et al. Transcutaneous Electrical Nerve Stimulation and Pain With Movement in People With Fibromyalgia. JAMA Network Open. Published March 27, 2026. doi:10.1001/jamanetworkopen.2026.2450
This blog is for informational and educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any new treatment, including TENS therapy, especially if you have underlying health conditions or contraindications.
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