Brain connectivity patterns predict placebo pain relief in Parkinson's disease

For the eight in ten Parkinson's patients who carry the quiet burden of chronic pain, medicine has long struggled to offer reliable relief or even reliable prediction. A new study of 66 patients suggests that the brain itself may hold the answer — that patterns of neural connectivity, measurable before any treatment begins, can identify who is neurologically primed to transform expectation into genuine pain relief. In mapping the circuitry of the placebo response, researchers are reframing placebo not as illusion, but as a biological capacity unevenly distributed across human minds.