KETAMINE FOR CHRONIC PAIN
Ketamine Therapy for Chronic Pain in Scottsdale
Ketamine was originally developed as an anesthetic, and its role in pain management predates its psychiatric applications by decades. For patients with certain chronic pain conditions — particularly those involving central sensitization — IV ketamine infusions can provide meaningful, lasting relief when other treatments have not.
The NMDA Receptor and Central Sensitization
Chronic pain is not simply persistent acute pain. In many conditions, it reflects central sensitization — a state in which the central nervous system becomes abnormally amplified in its response to pain signals. The pain is no longer simply proportional to peripheral tissue injury; it has become a pathological feature of the nervous system itself.
NMDA receptors play a central role in central sensitization. When NMDA receptors are chronically activated, they contribute to a process called wind-up — a progressive amplification of pain signaling in the spinal cord and brain. Ketamine, as an NMDA receptor antagonist, directly interrupts this process. It does not simply mask pain the way opioids do; it targets the neurological mechanism that is sustaining the pain.
This is a fundamentally different mechanism from opioid analgesics, which work on mu-opioid receptors and carry substantial risks of dependence, tolerance, and systemic side effects. Ketamine does not produce opioid-type dependence and can, in some cases, actually reduce opioid requirements in patients using them for chronic pain management.
Conditions That May Respond to Ketamine
The pain conditions with the strongest evidence base for ketamine therapy include complex regional pain syndrome (CRPS), fibromyalgia, peripheral neuropathy, and chronic migraine. These conditions share a common feature: they involve dysregulated central pain processing rather than simple nociceptive or inflammatory mechanisms.
Other conditions that may respond include failed back surgery syndrome, phantom limb pain, and certain presentations of chronic low back pain with central sensitization features. Ketamine has also been used as part of opioid reduction programs for patients with opioid-dependent chronic pain management.
It is important to be honest about what ketamine can and cannot do. For pain conditions that are primarily structural or inflammatory — an unaddressed herniated disc, active inflammatory arthritis, or nociceptive pain from an ongoing tissue injury — ketamine is unlikely to be a primary solution. Patient selection is critical, which is why the physician intake matters. Chronic pain often co-occurs with depression, and Dr. Zabel evaluates the full clinical picture.
Physician-Led Pain Management in Scottsdale
Dr. Andrew Zabel spent years in emergency medicine managing both acute and chronic pain presentations, administering IV analgesics, and making rapid decisions about pain management in high-acuity settings. That background is directly relevant to ketamine infusion therapy, which requires IV access, real-time monitoring, and dose adjustments based on patient response.
Pain protocols at Innerbloom differ from psychiatric protocols. The dosing regimens, infusion durations, and session frequency used for chronic pain are not the same as those used for depression or PTSD. During your intake, Dr. Zabel will review your specific pain history and design a protocol tailored to your condition.
Realistic expectations are part of the conversation from the start. Ketamine for chronic pain is often maintenance-based rather than curative. Many patients require periodic infusions to sustain pain-reduction effects. The goal is meaningful improvement in function and quality of life. See our pricing page for infusion costs.
Frequently Asked Questions
How is ketamine different from opioids for pain?↓
Opioids work on mu-opioid receptors and produce analgesia by blunting pain signal transmission. They carry significant risks of dependence, tolerance, constipation, and respiratory depression. Ketamine works on NMDA receptors and targets central sensitization — the neurological process that sustains many chronic pain conditions. It does not produce opioid-type dependence and may reduce opioid requirements in some patients.
What pain conditions respond best to ketamine?↓
The conditions with the strongest evidence base are complex regional pain syndrome (CRPS), fibromyalgia, peripheral neuropathy, and chronic migraine. These conditions share features of central sensitization — dysregulated pain processing in the central nervous system — which is the specific mechanism ketamine targets. Ketamine is generally less effective for purely structural or inflammatory pain conditions.
How long do the effects of ketamine last for pain?↓
This varies considerably by condition and individual. For some patients with CRPS, a single infusion series can provide months of significant pain relief. For others, particularly those with fibromyalgia or neuropathy, the effects may last weeks and require periodic maintenance infusions. Dr. Zabel will give you an honest assessment based on your specific condition.
How many infusions would I need for chronic pain?↓
Pain protocols typically involve a series of infusions — often four to eight over one to three weeks, depending on the condition and response. Some patients require only a single series; others benefit from ongoing maintenance infusions at intervals of weeks to months. Your specific protocol will be determined during the intake consultation.
A physician intake is the first step — and it is free.
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