As with many chronic pain disorders, IC and CP are poorly understood, and treatment is often not helpful. The goal of this study is to better understand how pain is felt in people with IC or CP. The MAPP Control Study is an observational study that will enroll participants from 6 Discovery Sites and 3 Satellite Sites across the U.S. The investigators will ask questions and gather information about the health and life of the participants for research purposes. The investigators hope that this study will lead to improvement in the treatment of IC and CP.