But sometimes the pain lingers long after the danger has passed, becoming chronic. Chronic pain in the form of headaches, joint problems, or full-blown fibromyalgia can radically impact one's life.

After developing chronic pain, I started looking into what scientists do — and still don’t — understand about the disease. Here is what I learned. By Jennifer Kahn Most of us don’t think ...

I think we’re past the point where I have to explain that chronic pain is not the result of imbalanced humors or a wandering uterus or possession by demons. But for more modern skeptics ...