This document provides an overview of fibromyalgia, including its classification, symptoms, causes, diagnosis, treatment, and the role of physical therapists. Fibromyalgia is classified as a central nervous system disorder characterized by widespread muscle pain and tender points. It commonly causes fatigue, sleep issues, and mood changes. While its causes are unclear, factors like genetics, trauma, and sleep disturbances may play a role. Physical therapists can help patients with fibromyalgia develop exercise and stretching routines to reduce pain and stiffness.