Interstitial Cystitis, or IC, is a bladder disorder that is often confused with "Over-Active Bladder or OAB" syndrome - millions suffer from it. The symptoms often start with frequency and urgency of urination but as the disease progresses over time, chronic pelvic pain starts to develop. The preliminary symptoms of IC can also vary widely with pain emanating from different areas of the torso from just above the knees to just below the navel. This can make accurate diagnosis more challenging, and many patients have had to wait years while doctors sort through a variety of possible causes.