A peripheral nerve stimulator (PNS) is a small implanted device that delivers gentle electrical pulses to one specific peripheral nerve to ease focal, persistent neuropathic pain in a single region of the body.
OVERVIEW
What a peripheral nerve stimulator is and how it works
Peripheral nerve stimulation targets a single, identifiable nerve that is generating chronic pain in one area of the body, rather than modulating the spinal cord more broadly. A thin lead with electrical contacts is positioned near the affected nerve, and a small generator delivers low-level pulses that change how pain signals travel along that nerve before they reach the brain. The aim is to reduce pain in the region supplied by that one nerve.
Because PNS focuses on a single peripheral nerve, it is best suited to pain that is localized and clearly linked to a known nerve distribution. At Columbia Pain & Spine Institute, our dual board-certified, fellowship-trained physicians evaluate whether your pain pattern, prior treatments, and diagnostic findings point to one nerve that may respond to stimulation.
CONDITIONS
What peripheral nerve stimulation commonly treats
PNS is generally reserved for focal chronic neuropathic pain that has not responded to more conservative care and that can be traced to a specific peripheral nerve.
Commonly treats
Whether PNS is appropriate depends on your individual diagnosis. In many cases, a diagnostic peripheral nerve block or occipital nerve block is used first to confirm that a specific nerve is the source of your pain before stimulation is considered. PNS is one of several nerve-targeted treatments we offer.
YOUR VISIT
What to expect
Before
Your physician reviews your history, imaging, and response to prior injections or nerve blocks to confirm that a single peripheral nerve is the pain generator. You will receive instructions about medications, including blood thinners, and about arranging a ride home. PNS is typically performed in two phases — a trial first, then a permanent implant only if the trial succeeds.
During
The procedure is minimally invasive and performed using image guidance — most often ultrasound and/or fluoroscopy (live X-ray) — to position the lead accurately near the target nerve. The area is numbed with local anesthetic, and light sedation may be used. A trial lead placement generally takes roughly 30 to 60 minutes; a permanent implant takes somewhat longer.
After
Most patients go home the same day. During a trial, you wear an external generator and keep a pain diary so we can assess how well stimulation works in daily life. If a permanent system is placed, you will have activity and incision-care instructions while the implant heals, and we review device programming and how to adjust your stimulation settings.
Recovery
Recovery from lead placement is usually short, though your physician may advise temporary limits on lifting, bending, or raising your arms while tissue heals around a permanent lead. Individual results vary, and we set expectations honestly during your evaluation rather than promising a specific outcome.
RELATED CARE
Related neurostimulation and procedures
Peripheral nerve stimulation is one of several neurostimulation options we offer. Explore all of our interventional pain services to see how these treatments fit together.
Spinal Cord Stimulator
Stimulation of the spinal cord for broader or multi-region chronic pain. Learn more
Peripheral Nerve Block
A diagnostic and therapeutic injection used to identify the nerve behind your pain. Learn more
Radiofrequency Ablation
Heat-based treatment that interrupts pain signals from targeted nerves. Learn more
FAQ
Frequently asked questions
Why is a trial done before a permanent peripheral nerve stimulator?
The trial is a diagnostic step. A temporary lead lets you experience stimulation during everyday activities so you and your physician can judge whether it meaningfully reduces your pain. A permanent implant is considered only if the trial is helpful.
Is the procedure done with imaging?
Yes. We use image guidance such as ultrasound and/or fluoroscopy to place the lead precisely near the target peripheral nerve, which supports accuracy and safety.
How is PNS different from a spinal cord stimulator?
A peripheral nerve stimulator targets one specific nerve causing focal pain, while a spinal cord stimulator addresses pain over a broader area through the spinal cord. Your physician will recommend the option that best matches your pain pattern.