Chronic pain isn’t always a sign that an injury simply hasn’t healed.

In many patients, persistent pain reflects changes occurring throughout the nervous system—from peripheral nerves to the spinal cord and brain.

In this webinar, Dr. Adam Klotzek explores the neurological mechanisms that can transform acute pain into chronic neuropathic pain and explains the science behind transcutaneous pulsed radiofrequency (tPRF).

The discussion examines how tPRF and DC galvanic stimulation are combined within the Stimpod NMS 460 to target nerve function without relying on painful mechanical stimulation.

For patients who cannot tolerate conventional movement-based rehabilitation, this represents an especially interesting area of neurological care.

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Why Chronic Pain Becomes a Nervous System Problem

Pain begins as an important protective mechanism.

After an injury, pain tells us something is wrong.

But chronic pain can become significantly more complicated.

Over time, neurological pathways responsible for processing pain can change.

The webinar explores several mechanisms involved in this process, including:

• Peripheral sensitization
• Central sensitization
• Increased nerve excitability
• Spinal cord changes
• Reduced pain inhibition
• Motor cortex dysfunction

As these systems become sensitized, movements or sensations that normally shouldn’t hurt may begin producing significant discomfort.

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The Motor Cortex and Chronic Pain

One of the most important concepts discussed by Dr. Klotzek is the relationship between chronic pain and the motor cortex.

The motor cortex is responsible for generating and controlling voluntary movement.

In chronic pain patients, motor cortex activity can become altered.

Reduced motor cortex output has been associated with both movement dysfunction and persistent pain.

This creates a difficult cycle:

Pain reduces movement → reduced movement alters neurological activity → neurological dysfunction can reinforce pain.

That helps explain why simply telling someone with chronic pain to move more may not solve the underlying problem.

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When the Nervous System Becomes Sensitized

Another major concept is pain sensitization.

After prolonged injury or inflammation, peripheral pain fibers can undergo structural and functional changes that make them increasingly responsive.

At the same time, neurons within the spinal cord can become hyperexcitable.

The result may include:

• Increased spontaneous pain
• Greater nerve excitability
• Expanded painful areas
• Pain from normally tolerable movement
• Increased sensitivity to touch

In severe cases, the nervous system effectively becomes better at producing pain.

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Why Manual Therapy Can Become Difficult

This neurological rewiring creates an enormous challenge for rehabilitation.

Patients may need movement, exercise, chiropractic care, or other physical therapies to regain function.

But movement itself may provoke pain.

If touch, stretching, adjustments, or exercise repeatedly increase symptoms, patients may become unable—or understandably unwilling—to participate in treatment.

That creates a clinical dilemma:

How do you begin rehabilitating the nervous system when the rehabilitation itself hurts?

This is where non-painful neuromodulation technologies become particularly interesting.

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Understanding DC Galvanic Stimulation

DC galvanic stimulation has a long history in nerve stimulation.

The technology uses low-frequency electrical pulses to activate targeted nerves.

One important effect is preferential stimulation of larger-diameter nerve fibers, including A-beta fibers.

These fibers play an important role in sensory and motor function and can also influence the nervous system’s natural pain-inhibiting mechanisms.

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The Pain Gate

One mechanism discussed in the webinar is commonly described through pain gate theory.

Stimulating large sensory fibers can influence spinal cord processing and reduce the transmission of signals from smaller pain fibers.

This can effectively decrease the amount of pain information traveling toward the brain.

Nerve stimulation may also influence central pain-modulating systems involving:

• Enkephalins
• Beta-endorphins
• Sensory cortex activation
• Motor cortex activation
• Descending pain-inhibitory pathways

The goal isn’t simply to distract someone from pain.

It is to influence the neurological systems controlling how pain signals are processed.

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Why the Twitch Response Matters

One of the useful characteristics of targeted nerve stimulation is the twitch response.

When the appropriate nerve is stimulated, clinicians can observe a small muscular contraction.

That provides immediate feedback that the intended nerve has been located.

Importantly, this response can occur without deliberately activating painful nerve fibers.

For highly sensitized patients, this offers clinicians a way to stimulate neurological pathways while minimizing discomfort.

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What Is Pulsed Radiofrequency?

Pulsed radiofrequency, or PRF, takes a different approach.

Rather than using continuous radiofrequency energy to intentionally heat and destroy nerve tissue—as occurs in certain radiofrequency ablation procedures—PRF delivers energy intermittently.

The webinar describes PRF using approximately 500 kHz radiofrequency waves delivered in short pulses.

Because the energy is pulsed rather than continuously applied, treatment is designed to avoid the destructive temperatures associated with conventional thermal radiofrequency ablation.

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tPRF vs. Radiofrequency Ablation

This distinction is important.

Traditional radiofrequency ablation may intentionally damage targeted nerve tissue to interrupt pain transmission.

Pulsed radiofrequency is different.

PRF is intended to neuromodulate rather than thermally destroy the nerve.

Research discussed during the webinar explores potential cellular and molecular effects involving:

• Mitochondrial activity
• Macrophage signaling
• Fibroblast activity
• Collagen production
• Axonal function
• Myelin
• Cellular signaling

These mechanisms are part of the scientific interest surrounding PRF as a potential tool for neuropathic pain and rehabilitation.

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What Happens to Damaged Nerves?

Neuropathy can involve deterioration of both the nerve axon and the protective myelin surrounding it.

These changes can contribute to abnormal electrical activity and spontaneous pain.

The webinar discusses research suggesting that PRF may influence biological processes associated with axonal and myelin health.

It may also affect different nerve fiber populations differently—including reducing excessive activity associated with smaller pain-transmitting fibers while supporting larger fibers involved in normal sensory and motor function.

This potential dual effect is particularly interesting in chronic neuropathic pain.

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Combining DC Galvanic Stimulation and tPRF

This is where the Stimpod NMS 460 becomes central to the webinar.

The device combines two different approaches:

DC Galvanic Stimulation

Designed to activate larger-diameter nerve fibers and engage neurological pain-inhibitory pathways.

Transcutaneous Pulsed Radiofrequency (tPRF)

Designed to deliver pulsed radiofrequency energy non-invasively to targeted peripheral nerves.

Rather than approaching these as competing technologies, they are used together.

The objective is to influence both nerve activation and pain modulation while creating an environment in which rehabilitation may become more tolerable.

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The Stimpod NMS 460

The Stimpod NMS 460 combines nerve localization, electrical stimulation, and transcutaneous pulsed radiofrequency (tPRF) in one clinical device.

Potential applications discussed during the webinar include patients experiencing conditions such as:

• Peripheral neuropathy
• Diabetic neuropathy
• Radiculopathy
• Trigeminal neuralgia
• Post-surgical nerve pain
• Chronic neuropathic pain

The device’s nerve-localization capabilities allow clinicians to identify the targeted nerve through the observable twitch response before applying therapy.

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Why Non-Painful Treatment Matters

For someone without chronic pain, discomfort during rehabilitation may be manageable.

For a severely sensitized patient, it can stop treatment entirely.

When every movement produces pain, patients may:

• Avoid exercise
• Fear manual therapy
• Reduce physical activity
• Lose strength
• Become increasingly sensitized
• Discontinue rehabilitation

A non-painful neurological intervention may provide an opportunity to begin changing that cycle.

The objective is to make the nervous system more receptive to the movement and rehabilitation the patient ultimately needs.

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A Tool to Complement Rehabilitation

Dr. Klotzek emphasizes using this technology as part of a broader clinical strategy.

tPRF does not eliminate the importance of:

• Movement
• Exercise
• Neurological rehabilitation
• Appropriate manual therapy
• Functional assessment

Instead, nerve stimulation may help selected patients reach the point where those therapies become easier to tolerate.

This makes it particularly relevant for clinicians treating patients whose pain prevents normal rehabilitation.

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Why Clinician Education Matters

One of the barriers discussed in the webinar is simple: many healthcare professionals are still unfamiliar with pulsed radiofrequency.

While electrical stimulation is common in rehabilitation, tPRF represents a different form of neuromodulation.

Understanding the underlying neurophysiology is therefore important.

Clinicians need to understand:

• What the technology does
• How nerves respond
• Why the twitch response matters
• How PRF differs from ablation
• Which patients may be appropriate candidates
• How it fits into a broader rehabilitation program

Education is essential for responsible adoption of any emerging clinical technology.

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The Future of Neuropathic Pain Rehabilitation

Chronic pain is not simply a structural problem.

It can involve complex adaptations throughout peripheral nerves, the spinal cord, motor cortex, and pain-regulation networks.

That means successful rehabilitation may require clinicians to influence multiple levels of the nervous system simultaneously.

The combination of established nerve stimulation principles with newer technologies such as transcutaneous pulsed radiofrequency (tPRF) represents an exciting area of continued research and clinical development.

For Dr. Adam Klotzek, understanding the neurological science behind these technologies is the key to using them intelligently—not simply adding another device to the treatment room.

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Learn More About Neurological Rehabilitation

Hope Brain Center incorporates advanced neurological technologies into individualized rehabilitation programs for patients with complex neurological conditions, chronic pain, neuropathy, brain injuries, and nervous system dysfunction.

Treatment begins by understanding the patient’s neurological function and determining which combination of therapies may be appropriate for their individual needs.

Visit https://hopebraincenter.com/ to learn more or request a consultation.

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Frequently Asked Questions

What is transcutaneous pulsed radiofrequency (tPRF)?

Transcutaneous pulsed radiofrequency (tPRF) delivers pulsed radiofrequency energy through the skin to targeted peripheral nerves. Unlike thermal radiofrequency ablation, it is designed to neuromodulate nerves without intentionally destroying nerve tissue.

Is tPRF the same as radiofrequency ablation?

No. Radiofrequency ablation typically uses thermal energy to intentionally damage targeted nerve tissue. Pulsed radiofrequency delivers energy intermittently at lower temperatures and is intended to influence nerve activity without thermal nerve destruction.

What is the Stimpod NMS 460?

The Stimpod NMS 460 is a nerve stimulation device that combines DC galvanic electrical stimulation with transcutaneous pulsed radiofrequency (tPRF) technology.

What is DC galvanic stimulation?

DC galvanic stimulation uses low-frequency electrical pulses to activate peripheral nerves, particularly larger-diameter nerve fibers involved in sensory and motor signaling.

What is a twitch response?

A twitch response is a visible muscle contraction produced when a targeted motor nerve is stimulated. It provides clinicians with real-time feedback that the appropriate nerve has been located.

Why can normal movement become painful in chronic pain patients?

Persistent pain can produce peripheral and central sensitization. Neurological changes may cause the nervous system to respond excessively to movement, touch, or other stimuli that would not normally be painful.

What role does the motor cortex play in chronic pain?

The motor cortex contributes to movement and interacts with networks involved in pain modulation. Altered motor cortex function has been associated with persistent pain and impaired movement.

Can tPRF regenerate nerves?

Research discussed in the webinar examines PRF’s effects on biological processes associated with axonal, myelin, mitochondrial, and cellular function. However, describing tPRF as guaranteed to “regenerate nerves” would overstate the evidence. Its potential role in nerve health and neuropathic pain continues to be investigated.

What conditions were discussed in relation to Stimpod?

The webinar discusses clinical use in neuropathic pain presentations including diabetic neuropathy, radiculopathy, trigeminal neuralgia, peripheral neuropathy, and post-surgical nerve pain.

Is tPRF intended to replace physical rehabilitation?

No. The webinar presents it as a complementary technology that may help reduce barriers to movement and rehabilitation, particularly for patients who cannot initially tolerate manual or movement-based therapies.