Fibromyalgia is a condition that causes severe pain in muscles and soft tissues, even when there’s no inflammation or injury. Although it doesn't cause permanent damage to your muscles, joints, or internal organs, the pain can be unbearable. The symptoms of fibromyalgia are unique to each person, but the most common are: headaches, difficulty concentrating, and memory problems, chronic fatigue, trouble falling asleep, or waking up still feeling tired, joint pain all over or muscle aches, pain in the trunk, neck, lower back, hips, and shoulders, and depression or anxiety.