Fibromyalgia is a common syndrome characterized by diffuse chronic pain and other somatic symptoms, such as poor sleep, fatigue,
and stiffness. The study of chronic pain has yielded new insights into the pathophysiology of fibro-myalgia and related chronic
pain disorders, and evidence suggests that patients with fibromyalgia experience pain differently from the general population.
This review discusses the mechanisms that are responsible for the chronic diffuse pain in fibromyalgia.