Cystitis is an inflammation of the bladder usually caused by a bacterial infection. Irritation or damage to the bladder lining or urethra (the tube that carries urine from the bladder out of the body) from, for example, poor hygiene or friction during sexual intercourse, can lead to the development of infection.
Most women will have cystitis at least once in their lifetime and around one in five women will have recurrent cystitis. It can occur at any age, but it is more common in:
Cystitis is more common in women as women have a shorter urethra and the opening is located very close to the anus (bottom). This makes it easier for bacteria present in the large bowel to reach the bladder and cause an infection.