Skip to content

Urinary Tract Infections in Teens and Adults

Font Size

Cause

Bacteria that enter the urethra and travel up the urinary tract camera.gif are the usual cause of urinary tract infections (UTIs). Bacteria that normally live in the large intestine camera.gif and are present in feces (stool) are the most common source of infection. Sexual intercourse may move bacteria into the urinary tract, especially in women. Catheters, which are small, flexible tubes inserted into the bladder to allow urine to drain, are a common source of bacterial infection in people who are in hospitals or who live in long-term care facilities.

Sometimes bacteria traveling through the blood or lymph system cause kidney or bladder infections.

Kidney stones, an enlarged prostate in men, and structural problems in the urinary tract can contribute to UTIs by limiting the body's ability to eliminate urine completely.

Women who have repeated UTIs may have inherited genes that make them more likely to get these infections.

1

WebMD Medical Reference from Healthwise

Last Updated: May 13, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
Next Article:

Hot Topics

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing

Popular Slideshows & Tools on WebMD

sore foot
3 warning signs.
acupuncture needle on shoulder
10 tips to look and feel good.
mature woman holding fan in face
Symptoms and treatments.
disciplining a boy
Types, symptoms, causes.
psoriasis
What it looks like.
checking blood sugar
Symptoms and treatment.
man behind computer screen
10 possible causes.
Woman with itchy watery eyes
Common triggers.
man screaming
Making sense of symptoms.
human liver
What puts you at risk?
restroom sign
Food and drinks that make you go.
two male hands
Understanding RA.

Women's Health Newsletter

Find out what women really need.