how many suffer from fibromyalgia in the united states?
How Fibromyalgia Is Diagnosed. By MaryAnn DePietro, CRT. Medically reviewed by Tom Iarocci, MD. May 7th 2016. Fibromyalgia syndrome (FMS), a chronic pain disorder that causes not only widespread pain throughout the body but also excessive fatigue and digestive problems, affects 5 million people in the United States.