Ketamine for Chronic Pain: When the Nervous System Needs a Different Approach

Chronic pain is more than a symptom that lasts a long time. Over time, persistent pain can affect sleep, mood, movement, energy, relationships, and the ability to participate fully in daily life. In some people, the nervous system itself becomes increasingly sensitive to pain signals. This is one reason chronic pain may continue even after conventional treatments have provided only partial relief.

For selected patients with treatment-resistant pain, IV ketamine offers a different therapeutic approach. Rather than simply treating pain at the site where it is felt, ketamine acts on pathways within the central nervous system that help regulate how pain signals are processed and amplified.

Chronic pain and central sensitization

One important concept in persistent pain is central sensitization. With ongoing pain signaling, the brain and spinal cord can become more responsive to incoming stimuli — almost as if the nervous system's “volume control” has been turned up.

Ketamine primarily blocks NMDA receptors, which are involved in pain transmission, sensitization, and neuroplasticity. At sub-anesthetic doses used in pain medicine, this mechanism may help interrupt abnormal pain amplification and reduce certain forms of neuropathic and centrally mediated pain.

This mechanism is one reason ketamine is considered for some patients whose pain has not responded adequately to more conventional approaches.

Which chronic pain conditions may be considered?

Depending on the individual patient and clinical circumstances, medically supervised ketamine may be considered for treatment-resistant conditions such as:

• Complex regional pain syndrome (CRPS)

• Neuropathic or nerve-related pain

• Fibromyalgia and other centrally sensitized pain syndromes

• Certain refractory headache or migraine disorders

• Other persistent pain conditions that have not responded adequately to standard treatment

Ketamine is not appropriate for every pain condition, and response varies. A careful medical evaluation is essential before treatment is considered.

Ketamine is not a stand-alone solution

At HILLMED, chronic pain is viewed through a whole-person lens. Pain can be influenced by the nervous system, inflammation, sleep disruption, physical deconditioning, nutrition, emotional stress, and the body's ongoing physiologic stress response.

When IV ketamine is appropriate, it can be incorporated into a personalized, multimodal plan that also emphasizes movement and exercise as tolerated, restorative sleep, nutrition, mindfulness, and stress management. These fundamentals do not replace medical treatment; they support the body's ability to function and recover while chronic pain is being addressed.

Why physician-led IV care matters

Ketamine is a powerful medication with anesthetic and physiologic effects. Patient selection, dosing, monitoring, and management of potential side effects require clinical judgment.

As a board-certified anesthesiologist, I have spent decades administering intravenous medications while continuously evaluating cardiovascular, respiratory, and neurologic responses. At HILLMED, that background informs how we approach IV ketamine: individualized treatment, careful monitoring, and attention to the entire patient rather than simply administering an infusion.

What patients can expect

Before treatment, each patient undergoes a medical evaluation to determine whether IV ketamine is an appropriate option and how it fits with existing care. During an infusion, vital signs are monitored while the medication is administered in a controlled clinical setting.

Temporary perceptual changes, lightheadedness, nausea, or a dreamlike sensation can occur. Patients should not drive after an infusion and need a responsible adult to take them home. Treatment schedules are individualized according to the condition being treated, response, and clinical assessment.

The goal: better function, not simply a lower pain score

For people living with chronic pain, meaningful improvement may include more than a change in a number on a pain scale. Better sleep, increased mobility, improved mood, greater participation in family or work, and the ability to exercise or engage in rehabilitation can all matter.

Ketamine is not a cure for chronic pain, and it does not help everyone. But in appropriately selected patients, it may provide an opportunity to reduce pain amplification and create a window in which other restorative strategies become more achievable.

A HILLMED perspective

The question is not simply, “Can ketamine reduce pain?” The more useful question is, “How can we help this person function better as a whole?”

That is the HILLMED approach: combining physician-led medical care with stress management, mindfulness, movement, nutrition, and restorative sleep to support the interconnected systems that influence health and recovery.

If chronic pain has persisted despite conventional treatment, a comprehensive evaluation can help determine whether IV ketamine should be considered as one component of a broader treatment plan.

To learn more about HILLMED's physician-led approach, visit hillmedstressmanagement.com or call our Plano practice at (972) 212-4341.

This article is for general educational purposes only and is not medical advice. Ketamine therapy for chronic pain is individualized, is not appropriate for everyone, and should be provided under qualified medical supervision. Individual results vary. Consult a qualified healthcare professional regarding your own condition and before changing any treatment.

About the author

Jerron C. Hill, M.D. is a board-certified anesthesiologist and the founder of HILLMED, a physician-led wellness practice in Plano, Texas. Drawing on decades of experience administering intravenous medications and managing complex physiology in the operating room, Dr. Hill brings a rigorous, safety-first approach to IV ketamine therapy, IV vitamin therapy, and physician-formulated CBD. At HILLMED, he pairs advanced, doctor-supervised treatments with the fundamentals of whole-person wellness — nutrition, movement, restorative sleep, and stress management — to help patients function and feel better. To learn more or schedule a consultation, visit hillmedstressmanagement.com or call the Plano practice at (972) 212-4341.