Ketamine Infusions for Chronic Pain: Uses & Limits

Summary

Ketamine infusions can quiet an overactive nervous system by acting on N-methyl-D-aspartate receptors to reduce central sensitization and neuropathic pain signaling. The medication does not repair underlying mechanical issues like herniated discs or joint instability, which require targeted identification and treatment. Reducing nervous system sensitivity provides a temporary window of relief that allows clinicians to investigate the underlying mechanical or inflammatory drivers behind the symptoms. Addressing these primary drivers prevents relying on infusions as a temporary solution.

Conditions and treatments discussed

• Central Sensitization. Central sensitization occurs when the nervous system becomes hyper-reactive, amplifying pain signals and keeping the body in a persistent fight-or-flight state.
• Ketamine Infusions. Ketamine acts on NMDA receptors to turn down amplified nervous system signaling without fixing underlying structural or mechanical problems.
• Complex Regional Pain Syndrome. Complex Regional Pain Syndrome is an example of a condition involving central sensitization where ketamine infusions may help manage pain signaling.
• Diagnostic Workup. A thorough diagnostic workup identifies whether pain stems from mechanical instability, autoimmune activity, nerve entrapment, or central sensitization.

What this shows about Manhattan Pain Medicine

Manhattan Pain Medicine describes a diagnosis-first model where interventions serve as components of a broader evaluation rather than standalone fixes. In this post, Dr. Siefferman explains that ketamine can quiet central sensitization, but the practice reports using that temporary window of reduced pain to identify and treat the underlying mechanical or inflammatory drivers. Manhattan Pain Medicine cautions against treating infusions as a repetitive escape from pain without addressing why the pain persists.