 Twenty female patients who met the American College of Rheumatology diagnostic criteria for the classification of FM were enrolled in the study. Patients were randomly allocated to receive either hydrotherapy or NST. Patient evaluations were performed at baseline, six weeks, three months, and six months. Primary outcome measures included the SF-36 quality of life questionnaire, the Fibromyalgia Impact Questionnaire and the Total Myalgic Score. Duration of morning stiffness and duration of weekly aerobic exercise as reported by the participants were secondary outcome measures. Statistics analysis was performed by standard parametric and non parametric methods. 