Fibromyalgia can be diagnosed by having a history of chronic widespread pain with pain in at least 11 of 18 specific pressure points. Fibromyalgia is a chronic progressive disease characterized by widespread muscle pain and is a nonarticular rheumatic disease clinically characterized by chronic pain throughout the body accompanied by pressure points in specific anatomical areas. The disease invades only the muscles and does not involve the joints, and is also known as fibromyalgia syndrome, fibromyositis, and rheumatic pain modulation disorder. The diagnosis of fibromyalgia includes a history of chronic widespread pain; pain contained in at least 11 of 18 specific pressure points, most commonly in the occiput, neck, shoulder, chest, lower back, and buttocks. All 4 quadrants of the patient’s body could be involved, and symptoms persisted for 3 months. Generalized widespread skeletal muscle pain is considered the main symptom of fibromyalgia and is often accompanied by anxiety, depression, sleep disturbances, chronic fatigue, or gastrointestinal dysfunction. In contrast, there is no laboratory evidence of corresponding joint or metabolic diseases (e.g., gout, diabetes), and muscle pathology reveals no structural changes. The diagnosis of fibromyalgia requires a comprehensive decision by a specialist, as it needs to be differentiated from many similar diseases. Those who experience the above symptoms are advised to visit a hospital promptly for treatment under the supervision of a doctor.