Fibromyalgia is a real medical condition. It used to be considered imagined before the 1800s because there was no sign of physical damage, but today, studies show that fibromyalgia causes chronic pain as the result of a malfunctioning nervous system. Millions of Americans between the ages of 18 and 45 experience this health condition. While there isn’t a cure, there are ways to treat fibromyalgia, including medication and physical therapy.