ROCHESTER, Minn.--(BUSINESS WIRE)--People with fibromyalgia can have difficulty getting a definitive diagnosis and finding an effective treatment plan. For many patients, the condition involves a confounding array of symptoms, including chronic pain, fatigue, sleep disturbance and mood disorders. One factor associated with fibromyalgia symptoms is a patient’s weight, according to a Mayo Clinic study published this month in Arthritis Care & Research.