Peripheral neuropathy — nerve damage that produces pain, numbness, or weakness, typically in the hands and feet — affects an estimated 20 million people in the United States, according to the National Institute of Neurological Disorders and Stroke. One of the most common and confusing features of the condition is its variability: symptoms may intensify, ease, disappear for a stretch, and return without obvious explanation. At Awakenings by Northwest Ohio Ketamine in Toledo, we work with patients whose neuropathic pain has not responded adequately to conventional treatments, and understanding why nerve pain behaves the way it does is an important part of finding the right path forward.
What Neuropathy Is and Why It Varies
Peripheral neuropathy is a condition that occurs when nerves in the peripheral nervous system — the network of nerves outside the brain and spinal cord — become damaged or dysfunctional. The peripheral nervous system is responsible for transmitting signals between the central nervous system (the brain and spinal cord) and the rest of the body: movement, sensation, temperature, and organ function all depend on it. When peripheral nerves are damaged, they can send incorrect, distorted, or amplified signals to the brain, producing sensations of pain, burning, tingling, or numbness that have no corresponding external cause (National Institute of Neurological Disorders and Stroke).
The variable nature of neuropathy symptoms — the way pain may come and go, shift in intensity, or change character — is one of its defining and most frustrating features. Unlike a broken bone, which produces consistent pain in a predictable location, neuropathic pain is inherently irregular. This irregularity leads many patients to question whether their symptoms are serious, whether they are imagining the episodes of relief, or whether the condition is progressing even when it feels quiet. The answer to all three questions is nuanced, and understanding the underlying mechanisms helps clarify what the fluctuations actually mean.
Types of Neuropathy and Their Patterns
Peripheral neuropathy is not a single condition — it is a category that encompasses many distinct forms, each with its own pattern of progression and symptom expression. The National Institute of Neurological Disorders and Stroke identifies several major types based on how many nerves are affected and which nerve fibers are involved.
Mononeuropathy affects a single nerve. Carpal tunnel syndrome, which involves compression of the median nerve at the wrist, is one example. Symptoms in mononeuropathy tend to be localized and may fluctuate based on position, activity, or swelling around the affected nerve.
Polyneuropathy affects multiple nerves, usually in a symmetrical pattern — the classic “stocking and glove” presentation in which numbness and pain begin in the feet and hands and gradually move upward. Diabetic peripheral neuropathy, one of the most common forms, follows this pattern. Symptoms in polyneuropathy can fluctuate significantly depending on factors like blood sugar control, activity level, temperature, and time of day.
Autonomic neuropathy involves nerves that control involuntary functions — heart rate, blood pressure, digestion, bladder function — and may produce symptoms that seem entirely unrelated to pain.
Small fiber neuropathy, which involves damage specifically to the small nerve fibers responsible for temperature sensation and pain, frequently produces burning pain that comes and goes and is notoriously difficult to confirm on standard nerve conduction studies. Patients with small fiber neuropathy are sometimes told their test results are normal even when they are experiencing significant symptoms, which can lead to delayed diagnosis and treatment.
Why Neuropathic Pain Fluctuates
The variability of neuropathic pain is not random — it reflects the behavior of damaged nerve fibers. When nerve fibers are injured or dysfunctional, they can become unstable, firing spontaneously or over-responding to stimuli that would not normally trigger pain. This instability is not constant; it is influenced by a range of physiological and environmental variables.
Temperature is one significant factor. Many patients with neuropathy report that cold environments intensify burning or cramping sensations, while warmth sometimes provides temporary relief — though this pattern can reverse in other presentations. Physical activity and fatigue affect nerve signaling as well; overexertion may temporarily worsen symptoms, while moderate movement sometimes improves circulation in ways that reduce pain signals.
Central sensitization — a process in which the central nervous system becomes persistently amplified in its response to pain signals — plays an important role in neuropathic conditions that have been present for an extended period. When the brain and spinal cord are chronically exposed to pain signals, they can begin to generate and amplify pain independently of what is happening in the peripheral nerves. This is why some neuropathy patients continue to experience significant pain even when the underlying nerve damage appears stable: the central nervous system has, in a sense, learned the pain response and continues to produce it.
Understanding central sensitization is particularly relevant to treatment, because therapies that address only the peripheral nerve damage — without interrupting the central component — will often produce incomplete relief. Our post on how long neuropathic pain lasts explores how these mechanisms affect recovery timelines in more detail.
When Intermittent Symptoms Still Signal Progressive Damage
A common misconception is that intermittent symptoms mean mild or non-progressive neuropathy. This is not reliably the case. Some forms of neuropathy progress silently during periods when symptoms are quiet. Nerve damage can be cumulative even when pain levels fluctuate, meaning that a reduction in pain does not necessarily indicate healing — it may simply reflect a temporary change in how damaged nerve fibers are firing.
This distinction matters because delaying evaluation and treatment during symptom-free periods can allow underlying nerve damage to progress. The National Institute of Neurological Disorders and Stroke notes that early treatment of the underlying cause — whether that is diabetes, autoimmune disease, nutritional deficiency, or another condition — offers the best chance of slowing or halting progression. Waiting for symptoms to become constant or severe before seeking care is a pattern that can have lasting consequences. If you are unsure whether your pain pattern warrants attention, our guide on managing chronic nerve pain outlines practical strategies while you pursue a formal evaluation.
How IV Ketamine Addresses Neuropathic Pain
Standard pharmacological approaches to neuropathic pain include anticonvulsants, antidepressants used for their pain-modulating properties, topical treatments, and opioids. For many patients, these treatments reduce pain to a manageable level. For others — particularly those with central sensitization or neuropathy that has been present for years — conventional options provide inadequate relief or produce side effects that are difficult to tolerate.
IV ketamine offers a different mechanism. By blocking NMDA receptors in the glutamate system, ketamine interrupts the central sensitization process that sustains neuropathic pain even when peripheral nerve damage is stable. Research supports ketamine’s effectiveness for chronic pain conditions through this mechanism, and its ability to produce rapid pain relief — sometimes within hours — distinguishes it from the weeks-long lag associated with most pharmacological alternatives (research on ketamine for chronic pain). Our ketamine for chronic pain management service page provides further detail on the conditions we treat and how the process works.
At Awakenings, IV ketamine is our delivery method of choice because it allows minute-to-minute dose control, faster onset, and a faster recovery compared to other routes of administration. Each infusion takes place in a private room at our clinic in Toledo, with continuous monitoring of pulse, oxygen, and blood pressure. Our team — led by Dr. William James, whose background includes anesthesiology and pain management, alongside Dr. Nadeem Moghal, who completed a fellowship at the Cleveland Clinic Foundation Pain Management Center — brings specialized expertise in managing complex chronic pain cases.
Results vary by individual. IV ketamine is not appropriate for every patient with neuropathic pain, and candidacy is determined through a thorough evaluation of your medical history, prior treatments, and current health status. We encourage you to discuss all treatment options with our providers and with any other clinicians currently involved in your care. We offer a free initial consultation to help you determine whether it is an option worth exploring. You can also review our ketamine FAQs for answers to the most common questions patients bring to that first conversation.
Addressing the Cost and Fear of Starting Over
Many patients who arrive at Awakenings have already been through a long, often disheartening treatment history. The prospect of starting a new treatment can feel exhausting rather than hopeful, especially when previous efforts have produced limited results. We want to acknowledge that directly: we cannot promise that IV ketamine will work for your specific situation, and we will not make claims that exceed what the evidence supports. What we can promise is an honest evaluation and a treatment team that respects how much you have already been through.
On the financial side, we do not accept insurance as a primary payer, but some insurance companies will cover all or a portion of IV ketamine as an out-of-network service. We will provide the documentation needed to support your claim. CareCredit financing is available for patients who need to manage costs over time. Active and former military with a valid ID or DD-214, and first responders with a badge, receive a 25 percent discount. We discuss all of this before any treatment decision is made.
Frequently Asked Questions
Can neuropathy go away on its own? In some cases — particularly when neuropathy is caused by a reversible factor like a nutritional deficiency, certain medications, or alcohol use — symptoms can improve significantly when the underlying cause is addressed. In many cases, however, peripheral neuropathy is progressive and does not resolve without treatment. Even intermittent symptoms warrant evaluation to determine the underlying cause and whether treatment is needed to prevent progression.
Is intermittent neuropathy less serious than constant neuropathy? Not necessarily. Some neuropathies cause fluctuating symptoms while still progressing at the nerve fiber level. A period of reduced symptoms does not always mean the condition is improving. If you are experiencing intermittent nerve pain, tingling, or numbness — particularly in the hands or feet — evaluation is worthwhile regardless of whether symptoms are currently active.
What types of neuropathy does Awakenings treat? We treat neuropathic pain conditions including peripheral neuropathy in patients for whom conventional treatments have not provided adequate relief. During your free consultation, we review your specific diagnosis, prior treatments, and medical history to determine whether IV ketamine infusion therapy is appropriate for your situation.
How quickly might I notice relief from IV ketamine? Research indicates that ketamine’s effects on pain can be felt relatively quickly — sometimes within hours of a first infusion. That said, results vary by individual, and a full course of infusions is generally recommended to evaluate the extent of benefit. We discuss realistic timelines with every patient before treatment begins.
Do I need a referral to be seen at Awakenings? A referral is not required, though we welcome documentation from any providers currently involved in your care. You can call us directly at 419-406-4263 or visit our website to schedule a free initial consultation.
Key Takeaways
- Peripheral neuropathy is nerve damage that produces variable symptoms — pain, tingling, numbness, or burning — that can come and go based on nerve fiber instability, temperature, activity, and central sensitization.
- Intermittent symptoms do not necessarily indicate mild or non-progressive neuropathy; nerve damage can be cumulative even when pain levels fluctuate.
- Central sensitization — a process in which the central nervous system amplifies and sustains pain signals — is a key mechanism in chronic neuropathic pain that peripheral treatments often cannot fully address.
- IV ketamine blocks NMDA receptors in the glutamate system, interrupting the central sensitization process and providing a different mechanism of action than standard neuropathic pain medications.
- At Awakenings in Toledo, we offer free initial consultations for patients with treatment-resistant neuropathic pain; results vary by individual and candidacy requires clinical evaluation.
Neuropathic pain that comes and goes is still neuropathic pain — and it deserves serious evaluation and treatment. At Awakenings by Northwest Ohio Ketamine in Toledo, our team works with patients across the Ohio and Michigan area who have not found adequate relief through conventional care. Call us at 419-406-4263 or schedule a free consultation to discuss whether IV ketamine infusion therapy may be a meaningful option for your situation.
References
National Institute of Neurological Disorders and Stroke. Peripheral Neuropathy. https://www.ninds.nih.gov/health-information/disorders/peripheral-neuropathy
Research on ketamine for chronic pain via NMDA receptor action. https://www.ncbi.nlm.nih.gov/books/NBK539824/
Medical Disclaimer
The information in this blog is for educational purposes only and does not constitute medical advice. IV ketamine infusion therapy for neuropathic pain should only be considered under the supervision of a qualified medical provider familiar with your full medical history and prior treatment responses. Individual results vary. If you are experiencing a medical emergency, please call 911 or go to your nearest emergency room.