Pfizer received approval for Lyrica capsules for the management of fibromyalgia, a chronic, widespread pain condition affecting more than six million Americans. Characterized by relentless chronic pain, fibromyalgia is usually accompanied by poor sleep, stiffness and fatigue, deep tenderness, soreness and flu-like aching. Fibromyalgia is thought to result from neurological changes in how patients perceive pain, specifically a heightened sensitivity to stimuli that are not normally painful...