The Real World Examination of Fibromyalgia: Longitudinal Evaluation of Costs and Treatments (REFLECTIONS) Study is a 12-month, prospective observational study that will be utilized in approximately 58 care settings in the United States (US) and Puerto Rico. It is designed to examine treatment patterns and health outcomes of adult participants diagnosed by their physician with fibromyalgia (FM) and who are starting any "new pharmacologic agent" for FM.