Your bladder stores urine (liquid waste) until it’s passed out of the body. It is not clear what causes IC. However, doctors note some changes in the bladder that may be responsible. The protective lining that keeps urine away from your bladder walls seems to become thinner. The walls seem to stiffen and harden soÂ your bladder canâ€™t expand to hold urine. During certain tests, doctors may see pinpoints of bleeding (glomerulations)Â onÂ your bladder wall. In rare cases, health care providers may also find a crater (called a Hunner ulcer).
Symptoms in women may get worse during their period. Symptoms may go away for a period of time (remission), but they often come back again. Symptoms include: