University of Arizona Health Sciences Oct 9 2025 University of Arizona researchers may have uncovered a connection between chronic pain and a somewhat uncommon immune condition, opening the door to future research on immune biomarkers for chronic pain. A small study of medical records led by Julie Pilitsis, MD, PhD, professor and chair of the Department of Neurosurgery at the U of A College of Medicine – Tucson, unexpectedly found that 12% of chronic pain patients who were treated with spinal