UTIs are caused by bacteria. The bacteria cling to the opening of the urethra. There they begin to grow and spread. The infection can then move up into the bladder. If the infection is not treated it can spread to the kidney. It can then lead to a severe kidney infection.
The bacteria often come from the colon or vagina. They are passed or moved toward the urethra.
UTIs are treated with antibiotics. You will probably start to feel better after 1-2 days. It is important to take all of the medicine, even if you feel better. A hospital stay may be needed with a severe infection. The antibiotics can then be delivered through an IV.
The infection may cause pain and spasms in the bladder. Your doctor may recommend medicine to help manage pain.
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Bladder infection (urinary tract infection—UTI) in adults. National Institute of Diabetes and Digestive and Kidney Diseases website. Available at:
https://www.niddk.nih.gov/health-information/urologic-diseases/bladder-infection-uti-in-adults. Accessed September 7, 2017.
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Uncomplicated urinary tract infection (UTI) (pyelonephritis and cystitis). DynaMed Plus website. Available at: https://www.dynamed.com/topics/dmp~AN~T116894/Uncomplicated-urinary-tract-infection-UTI-pyelonephritis-and-cystitis. Updated March 15, 2017. Accessed November 30, 2017.