PCA Study Spotlight: The Hidden Circuit of Chronic Pain

Stanford’s Hidden Chronic Pain Circuit: A Better Framework for Explaining Persistent Mechanical Pain

This episode of PCA Study Spotlight reviews a Stanford Nature study describing a “hidden” looping circuit between the spinal cord and brain that appears to selectively drive chronic mechanical pain in mice while remaining distinct from pathways involved in acute, protective pain and normal touch. In mouse models, silencing nodes in the loop reduced injury-induced mechanical hypersensitivity due to inflammation or nerve injury, whereas repeated activation could create lasting hypersensitivity in healthy mice. The host emphasizes this is basic science, not a chiropractic or manipulation study, but argues it offers chiropractors a clearer framework f ...