The National Institute for Diabetes and Kidney and Digestive Diseases (NIDDK) will hold a Meeting on Measurement of Urinary Symptoms (MOMUS) on November 14-15, 2011 at the Natcher Building - Main Auditorium on the NIH Campus in Bethesda, MD. Lower urinary tract symptoms (LUTS) is a common group of symptoms seen in men and women. Both incidence and prevalence rates increase with age; consequently, treatment costs pose a major financial challenge to the nation. The American Urological Association (AUA) symptom score, which was initially intended for benign prostatic hyperplasia (BPH) patients, is widely used in clinical practice. In addition, it is often used as an endpoint in most clinical trials to assess symptom-based clinical improvement in benign lower urinary tract disease. Using the current AUA symptom score may not only be misleading clinically and correlate weakly with patient satisfaction, but also can be scientifically invalid and impede scientific progress. Thus, a better measurement tool which focuses on patient reported outcomes (PRO) is essential to quantify early, late, transient, and persistent LUTS in men and women and in all age groups. The goal of this meeting is to increase discussion about this topic among various populations with different expertise: urologists, patients, other clinicians, researchers, industry, advocacy groups, and various government agencies such as the U.S. Food and Drug Administration, the Centers for Medicare and Medicaid Services, and Agency for Healthcare Research and Quality. More information on the meeting can be found at http://www2.niddk.nih.gov/News/Calendar/MOMUS2011.htm.