A chronic bladder problem involving a bladder wall that is inflamed and irritated. Symptoms include an urgent need to urinate, both daytime and nighttime; pressure, pain and tenderness around the bladder, pelvis and perineum (the area between the anus and vagina or the anus and scrotum) which may increase as the bladder fills and decrease as it empties during urination; a bladder that won’t hold as much urine as it did before; pain during sexual intercourse; in men, discomfort or pain in the penis or scrotum. In many women, the symptoms get worse before their menstrual period. Stress may also make the symptoms worse, but it does not cause them.