Fibromyalgia Pain Can Affect the Entire Day.
Fibromyalgia can involve widespread pain along with fatigue, sleep disturbance and difficulty concentrating. When pain persists across the body, ordinary activities can become harder from morning through night.
Pain Relief International focuses on one part of that burden: helping expand access to practical pain relief so pain itself becomes less of a barrier to participation.
See the PRI Fibromyalgia Approach
Fibromyalgia Is More Than a Single Painful Spot.
The experience varies. Widespread pain can occur alongside other symptoms that influence how someone sleeps, works, thinks and participates in daily life.
Widespread Pain
Pain and tenderness may be experienced across multiple areas rather than remaining in one location.
Sleep
Pain and sleep problems can combine to make rest and recovery more difficult.
Energy & Fatigue
Fatigue is an important fibromyalgia symptom. Pain may add another burden to already-limited energy.
Concentration & Function
Pain can compete for attention while work, caregiving and ordinary responsibilities continue.
Reducing Pain Means Removing One Barrier.
Pain relief does not mean every symptom of fibromyalgia disappears. But when pain is one of several barriers to activity, reducing that barrier may make participation easier.
Widespread Pain Is Only Part of the Picture.
Fibromyalgia is a chronic disorder associated with widespread pain and tenderness, fatigue and sleep problems. Many people also experience stiffness and difficulty with concentration, thinking or memory—often described as “fibro fog.”
Symptoms Can Vary
Pain may be experienced in multiple areas, and the combination and intensity of symptoms can differ from person to person.
There Is No Single Diagnostic Test
Fibromyalgia is diagnosed clinically, and healthcare providers may evaluate for other conditions that can produce similar symptoms.
Management Is Usually Multimodal
Established management can include exercise or movement therapy, behavioral approaches, sleep and self-management strategies, and medication when appropriate.
Pacing Matters
Gradually building activity and balancing activity with rest can be part of living with fibromyalgia.
Medical information in this section is based on NIH/NIAMS and the U.S. National Library of Medicine (MedlinePlus).
A Reusable Option for Pain That May Be Felt in Different Places.
The PRI 4×4 Deployment Unit uses NeuroCuple technology — a reusable, passive, nonpowered approach to pain relief built around a patented array of capacitive junctions.
The technology is designed to interact through non-invasive capacitive coupling with the local bioelectrical environment associated with pain perception.
NeuroCuple is not presented as a treatment or cure for the underlying condition of fibromyalgia. PRI presents it as a drug-free option for helping manage areas where pain is being experienced.
It is best understood as one possible pain-management tool within a broader individualized plan—not as a replacement for evaluation, exercise, sleep strategies, rehabilitation, behavioral approaches or medications that may be appropriate for a particular person.
Start Low. Work Upward. Finish at the Base of the Neck.
For widespread fibromyalgia pain, PRI uses a progressive approach that addresses painful areas one at a time.
Start With the Lowest Painful Area
Begin at the lowest painful area of the back, farthest from the head. Position the PRI 4Ă—4 over that area and observe how it feels.
Wait for the Area to Settle
As discomfort in that area decreases, prepare to move the unit upward.
Move Up to the Next Painful Area
Reposition the PRI 4Ă—4 to the next painful area above the first and continue progressively upward as each area settles.
Continue Upward
Work through the painful areas one at a time until they have calmed.
Finish at the Base of the Neck Overnight
After working progressively upward, position the PRI 4Ă—4 near the base of the neck for overnight use.
Use the Pillowcase to Hold It in Place
Place the PRI 4Ă—4 between the pillow and pillowcase, positioned so it remains near the base of the neck while sleeping. Direct skin contact is not required.
PRI has received reports from users describing improvement after following this approach. Individual experiences vary, and this specific fibromyalgia protocol has not been evaluated in a controlled clinical trial.
What the Research Does — and Does Not — Establish
NeuroCuple has published clinical research, but the published studies cited by PRI were conducted in postoperative arthroplasty populations, not people enrolled specifically for fibromyalgia.
Published NeuroCuple Research
A 2023 prospective randomized open-label pilot evaluated NeuroCuple in primary total knee and hip arthroplasty. A 2026 randomized placebo-controlled trial evaluated the technology in 156 total knee arthroplasty patients.
These studies should not be interpreted as clinical proof that NeuroCuple treats fibromyalgia. The protocol above reflects PRI field-use experience and remains distinct from the published clinical evidence.
Explore Clinical EvidenceA Reusable PRI 4Ă—4, Ready When Pain Becomes a Barrier.
The PRI 4Ă—4 requires no batteries, charging or consumables and can be repositioned when the location of pain changes.
PRI 4Ă—4 Deployment Unit
Get Your PRI 4×4 — $80100% of proceeds from device purchases fund Pain Relief International deployments. Purchasing a device is not a tax-deductible donation.
Persistent Pain Can Become a Persistent Barrier.
Pain Relief International works to expand access to practical, reusable, drug-free pain relief in homes and communities.
Donate to Expand Pain ReliefRemove the Pain. Unleash the Possibilities.®
Fibromyalgia Pain & the PRI 4Ă—4
What does fibromyalgia pain feel like?
Fibromyalgia is commonly associated with widespread pain and tenderness. People may also experience fatigue, sleep problems and cognitive symptoms. Symptoms and intensity vary.
Can fibromyalgia pain affect different areas?
Yes. Fibromyalgia pain can be widespread and experienced in multiple areas. PRI's practical approach focuses on the areas where pain is being experienced rather than assuming one fixed location.
Does NeuroCuple treat or cure fibromyalgia?
No. NeuroCuple is not presented as a treatment or cure for the underlying condition. PRI presents it as a drug-free pain-relief option for helping manage areas where pain is being experienced.
Where should I start with the PRI 4Ă—4 for widespread fibromyalgia pain?
PRI's field-use approach is to begin at the lowest painful area of the back, farthest from the head. As discomfort decreases, move the unit upward to the next painful area and continue progressively upward.
What should I do after the painful areas have settled?
PRI's field-use protocol is to position the PRI 4Ă—4 near the base of the neck for overnight use after progressively working upward through the painful areas.
How can I keep the PRI 4Ă—4 in place while sleeping?
The PRI 4Ă—4 can be placed between the pillow and pillowcase and positioned so it remains near the base of the neck. Direct skin contact is not required.
Has this fibromyalgia application protocol been studied in a controlled clinical trial?
No. The specific fibromyalgia application protocol described here has not been evaluated in a controlled clinical trial. PRI distinguishes field-use experience from published clinical evidence.
Has NeuroCuple been clinically studied?
Yes. Published NeuroCuple research includes postoperative total knee and hip arthroplasty populations. Those studies do not establish effectiveness specifically for fibromyalgia.
Does the PRI 4Ă—4 use batteries or charging?
No. NeuroCuple is passive and nonpowered. It requires no batteries or charging and does not deliver powered electrical stimulation into the body.
Evidence & Sources
- NIH / NIAMS — Fibromyalgia
- NIH / NIAMS — Fibromyalgia: Diagnosis, Treatment, and Steps to Take
- MedlinePlus — Fibromyalgia
- Klatt BA, O'Malley M, Ayazbekova A, et al. Nanotechnology-Based Device Reduces Pain and Immediate Opioid Requirements and Facilitates Earlier Discharge From the Hospital Following Total Knee Arthroplasty: A Randomized Placebo-Controlled Trial. The Journal of Arthroplasty. 2026. DOI 10.1016/j.arth.2026.04.083.
- Chelly JE, Klatt BA, Groff Y, et al. Role of the NeuroCuple Device for the Postoperative Pain Management of Patients Undergoing Unilateral Primary Total Knee and Hip Arthroplasty. Journal of Clinical Medicine. 2023;12:7394.
Important: This page is educational and does not diagnose fibromyalgia or replace professional medical care. Do not stop or change prescribed medication without consulting the appropriate clinician.