Ketamine for Chronic Pain
683 providers treating chronic pain
Providers experienced in treating chronic pain conditions with ketamine therapy, including neuropathic pain, CRPS, fibromyalgia, and migraine.
Ketamine Therapy for Chronic Pain
If you live with chronic pain conditions like complex regional pain syndrome (CRPS), fibromyalgia, or neuropathic pain that has not responded to conventional treatments, ketamine infusion therapy may be an option to explore. Ketamine has been used in pain management for decades, predating its psychiatric applications, and has the strongest evidence base for certain specific pain conditions. It was originally developed as an anesthetic in the 1960s, so its pain-relieving properties are well established.
CRPS is the condition with the most robust evidence supporting ketamine use. Multiple studies have shown that ketamine infusions can produce significant pain reduction in CRPS patients, sometimes lasting weeks to months after a treatment series. For neuropathic pain more broadly, including diabetic neuropathy, post-herpetic neuralgia, and post-surgical nerve pain, ketamine has demonstrated meaningful benefit in clinical trials, though results are variable and not everyone responds.
Fibromyalgia is another condition where ketamine shows promise. The central sensitization that characterizes fibromyalgia involves NMDA receptor overactivation, which is precisely what ketamine blocks. Several studies have reported reductions in fibromyalgia pain scores following ketamine infusions, though the optimal dosing and frequency for this condition are still being determined. If you have fibromyalgia, you should know that response rates appear somewhat lower than for CRPS.
Pain protocols often differ significantly from psychiatric protocols. Infusions for chronic pain may use higher doses and longer durations, sometimes running four to six hours per session compared to the 40-minute sessions typical for depression. Some pain-focused protocols involve multi-day infusions in a hospital or specialized clinic setting, particularly for CRPS. Your provider will determine the appropriate protocol based on your specific diagnosis, pain severity, and treatment history.
Managing expectations is important. Ketamine for chronic pain rarely eliminates pain entirely. A realistic goal is meaningful pain reduction, often measured as a 30-50% decrease in pain scores, that improves your ability to function and engage with physical therapy, exercise, and other components of a chronic pain management plan. Some people experience dramatic improvement, while others see modest or no benefit. A trial of two to three infusions is usually enough to tell whether you are likely to respond.
How Ketamine Treats Chronic Pain
Chronic pain often involves central sensitization, a state where the central nervous system amplifies pain signals. NMDA receptors play a key role in this process, and ketamine's blockade of these receptors can interrupt the pain amplification cycle. This is sometimes described as "resetting" the nervous system's pain processing, though the effect is more nuanced than that metaphor suggests.
Ketamine also reduces levels of inflammatory mediators and may modulate descending pain inhibition pathways. For conditions like CRPS and fibromyalgia, where the pain is driven more by nervous system dysfunction than ongoing tissue damage, these central mechanisms make ketamine a particularly logical intervention. The anti-inflammatory effects may also benefit pain conditions with a significant inflammatory component.
Who Is a Candidate?
You may be a candidate if you have a diagnosed chronic pain condition, particularly CRPS, neuropathic pain, or fibromyalgia, that has not responded to conventional pain management approaches including physical therapy, medications, and nerve blocks. Your provider will evaluate your pain history, current medications (including opioid use), and overall health. A history of substance use disorder requires careful consideration, as ketamine does have abuse potential, though the risk in supervised medical settings is low.
Providers generally look for patients with a clear diagnosis and documented failure of standard treatments. If your pain condition has not been thoroughly evaluated and diagnosed, that step should come before considering ketamine. A comprehensive pain assessment helps ensure ketamine is targeting the right problem.
Frequently Asked Questions
- Duration varies significantly depending on your condition and individual response. Some people with CRPS report weeks to months of relief after a treatment series. For other pain conditions, effects may last days to weeks. Maintenance infusions are typically needed to sustain benefits long-term.
- Yes. Pain protocols often use higher doses and longer infusion times, sometimes four to six hours compared to 40 minutes for depression. Some CRPS protocols involve multi-day infusions in hospital settings. Your provider will design a protocol specific to your pain condition and its severity.
- Ketamine is typically used alongside existing pain management rather than as a replacement. Some patients are able to reduce other medications after successful ketamine treatment, but this should only be done under medical supervision. Abruptly stopping pain medications, especially opioids, can be dangerous.