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Chronic back pain isn't just physical — it's personal. UC San Diego researchers found that movement-triggered pain flares activate the brain's "self network," a region tied to identity and memory, rather than shutting it down like ordinary pain does. This discovery could explain why standard pain treatments often fall short and points toward mind-body approaches like mindfulness and psilocybin as promising alternatives.
Researchers at UC San Diego have uncovered a striking neurological twist in how the brain processes chronic low back pain (cLBP). Published in the British Journal of Anaesthesia, the study found that movement-triggered pain flares activate the brain's Default Mode Network (DMN) — often called the "self network" — rather than suppressing it, as happens with ordinary acute pain. This suggests chronic pain becomes deeply entangled with a person's sense of identity, memories, and emotional experiences.
Using functional MRI on 114 cLBP patients during a leg raise test, researchers observed that pain flares lit up the DMN, while a separate heat-based pain stimulus had the opposite effect. The more severe the chronic pain, the stronger the connection between the DMN and the brain's sensory processing regions.
Key Takeaways:
Why it matters: Low back pain is the world's leading cause of disability. If chronic pain is partly a disorder of self-perception, then treatments targeting identity and emotional processing — not just pain signals — could offer relief where conventional medications have fallen short.
