Interstitial cystitis (IC) is a condition that results in recurring discomfort or pain in the bladder and the surrounding pelvic region. Web site describes what IC and IC/PBS (painful bladder syndrome) are, the diagnosis and treatments. According to the Interstitial Cystitis Association website, 4 to 12 million may have IC. About twice as many women are affected as men. Service by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), part of the National Institutes of Health. Free 800 numbers to call