Deciding whether a treatment is worth trying is harder than it should be.
The information available to you comes largely from the people selling it. The condition you have is uncomfortable enough that you are motivated to try things. And there is rarely anyone offering a straight account of who a given treatment suits and who it does not.
So here is a practical framework, written around neuromodulation treatments like Stimpod, though most of it applies to any device based intervention you are considering.
Question One: Has the Cause Been Established?
This comes first and it is not negotiable.
Persistent nerve symptoms deserve a diagnosis before they get a treatment.
Numbness, burning, tingling and nerve pain have a long list of possible causes. Diabetes and prediabetes. B12 deficiency. Thyroid dysfunction. Medication effects. Alcohol. Nerve compression at the spine, or at specific points along a nerve’s course. Autoimmune conditions. And several others.
Some of those are treatable at the source. Correcting a B12 deficiency or changing a medication addresses the actual problem, which is considerably more valuable than managing the symptom.
And one specific pattern deserves emphasis. Symmetrical numbness in both feet, starting at the toes and creeping upward over months, is a presentation that warrants blood tests rather than a device.
If nobody has investigated why you have these symptoms, that is the next step, and any clinic that skips it in favor of selling you a course of treatment is doing you a disservice.
Question Two: Am I Actually Suitable?
Devices that deliver electrical current are not appropriate for everyone, and you should be screened properly before anything is discussed.
Groups where caution or exclusion applies include people with:
Cardiac pacemakers, implanted defibrillators, or other implanted electronic devices.
Pregnancy.
A history of seizures, in some circumstances.
Active infection or broken skin over the treatment area.
Certain cancers or undiagnosed masses in the area.
Plus individual considerations depending on your medical history and medications.
What good practice looks like: a detailed set of questions about your health, implants and medications before anyone discusses booking or payment. If nobody asks, that tells you something about the clinic.
Question Three: What Exactly Is Being Claimed?
This is where to pay close attention to language.
Reasonable claims, consistent with what this type of device is actually cleared for: symptomatic relief, pain management, use as an adjunct alongside rehabilitation.
Claims that go beyond the evidence: curing neuropathy, reversing nerve damage, regenerating nerves, eliminating the need for medication, or guaranteed results.
And a specific one to be wary of: zero side effects. Promotional material for some devices in this category has used that phrase, and no intervention that does anything meaningful can honestly claim it.
A fair question to ask any clinic: what does the evidence specifically support for this device, as opposed to the broader technique it is based on? For pulsed radiofrequency, a large proportion of the published research involves invasive delivery with a needle placed next to the nerve, which is a different intervention from a device applied to the skin.
A clinic that can answer that distinction clearly is one worth trusting.
Question Four: What Is the Plan Beyond the Device?
Here is the question that reveals most.
If the proposed plan is a device and nothing else, it is an incomplete plan.
Persistent nerve related symptoms affect function in ways no device addresses. Balance. Strength. Walking. Confidence. Foot protection where sensation is reduced. Those respond to training, and they frequently determine how much your symptoms actually cost you day to day.
What a complete plan should include:
A clear understanding of what is causing your symptoms.
Appropriate medical management, since neuropathic pain responds to specific medication classes that differ from ordinary painkillers, and that is a physician conversation.
Strength, balance and functional work.
Practical adjustments, including foot protection if sensation is reduced.
And any adjunct treatment positioned as part of that, rather than as the whole of it.
Question Five: How Will We Know If It Worked?
Astonishingly often, nobody agrees this in advance.
Before you start anything, write down two or three specific things you currently cannot do, or can only do with difficulty. Not a pain score. Something checkable.
Sleeping through the night without being woken. Walking a particular distance. Getting through a workday. Riding for a certain duration without symptoms. Standing in a kitchen for the length of cooking a meal.
Then set review points. Reassess at the end of the course, and again several weeks later.
And be honest about confounders. If you also started strength work, changed footwear, adjusted medication or reduced a provocative activity during the same period, then improvement has more than one candidate explanation. That is not cynicism, it is clear thinking about what to continue.
Question Six: What Happens If It Does Not Work?
Ask before you pay, not afterward.
What proportion of people do not respond? Any honest answer involves a meaningful number.
What is the plan in that case?
Is there a point at which you would advise me to stop? A clinic willing to name that point in advance is a clinic worth using.
And what is the total cost, in writing, including assessment and follow up?
Question Seven: What Would You Tell Your Own Family?
Disarming, and the answer is usually revealing.
It invites somebody to step outside the sales frame, and the useful version of that answer tends to include something inconvenient, like suggesting you do three months of properly progressed rehabilitation first and see where you are.
If the answer is identical to the website copy, treat that as information.
A Note on Why We Publish This
It is unusual for a clinic to hand you a list of questions designed to make its own services harder to sell.
We think it is the right approach, partly because people who make informed decisions tend to be better patients, and partly because the alternative in this field is a lot of confident claims that do not hold up.
The honest position on neuromodulation devices is that they are cleared for pain management, that the broader technique has encouraging research behind it, that device specific evidence is more limited than the marketing implies, and that they work best as an adjunct to the things with stronger evidence.
That is less exciting than a breakthrough. It is also accurate.
Symptoms That Need Medical Attention
See your physician promptly for rapidly progressing numbness or weakness, new weakness in an arm or leg, symptoms that began suddenly, numbness spreading over weeks, any wound, blister or ulcer on a foot with reduced sensation, signs of infection, or symptoms with unexplained weight loss, fever or feeling unwell.
Seek emergency care for sudden numbness or weakness on one side of the body, particularly with facial drooping, arm weakness or difficulty speaking.
Ask Us These Questions
We have published this list because we are comfortable answering it, and because we would rather you made a considered decision than a rushed one.
Marin Peak Physio offers a free discovery visit at no cost and no obligation. Bring these questions. You will get a thorough assessment, honest answers including where the evidence is thin, and a clear view of whether what we offer is right for your situation.
If the answer is that your money and time would be better spent elsewhere, we will say so.
