Skip to content
My WebMD Sign In, Sign Up

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

feet
Solutions for 19 types.
row of colored highlighter pens
Tips for living better.
oatmeal and eggs
The best and worst for you.
neti pot
6 steps for nasal irrigation.
MS Overview
Recognizing symptoms.
stressed working woman
And how to fix them?
woman walking in fog
12 tips for managing your disease.
Healthy Snack
13 delicious options.
Woman running
10 ways to boost your metabolism.
lone star tick
How to identify that bite.
young woman in sun
What to watch for.
Colored x-ray of tooth decay
What are the top ones?

Women's Health Newsletter

Find out what women really need.