Causes
Cystitis is caused by germs, usually bacteria that enter the
urethra and then the bladder. These bacteria can lead to infection, most
commonly in the bladder. The infection can spread to the kidneys.
Most of the time, your body can get rid of these bacteria
when you urinate. However, sometimes the bacteria can stick to the wall of the
urethra or bladder, or grow so fast that some bacteria stay in the bladder.
Women tend to get infections more often than men because
their urethra is shorter and closer to the anus. For this reason, women are
more likely to get an infection after sexual intercourse or when using a
diaphragm for birth control. Menopause also increases the risk for a urinary
tract infection.
The following also increase your chances of developing cystitis: