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Urinary Tract Infections

A urinary traction infection (UTI) is a very common type of infection in your urinary system. A UTI can involve any part of your urinary system, including the urethra, ureters, bladder and kidneys. Symptoms typically include needing to urinate often, having pain when urinating and feeling pain in your side or lower back. Most UTIs can be treated with an antibiotic.

What is a urinary tract infection (UTI)?

A urinary tract infection (UTI) is an infection of the urinary system. This type of infection can involve your urethra (a condition called urethritis), kidneys (a condition called pyelonephritis) or bladder, (a condition called cystitis).

Your urine typically doesn’t contain bacteria (germs). Urine is a byproduct of our filtration system—the kidneys. When waste products and excess water is removed from your blood by the kidneys, urine is created. Normally, urine moves through your urinary system without any contamination. However, bacteria can get into the urinary system from outside of the body, causing problems like infection and inflammation. This is a urinary tract infection (UTI).

What causes a urinary tract infection (UTI)?

Urinary tract infections are caused by microorganisms — usually bacteria — that enter the urethra and bladder, causing inflammation and infection. Though a UTI most commonly happens in the urethra and bladder, bacteria can also travel up the ureters and infect your kidneys.

More than 90% of bladder infection (cystitis) cases are caused by E. coli, a bacterium normally found in the intestines.

What are the symptoms of a urinary tract infection (UTI)?

A urinary tract infection causes the lining of the urinary tract to become red and irritated (inflammation), which may produce some of the following symptoms:

  • Pain in the side (flank), abdomen or pelvic area.

  • Pressure in the lower pelvis.

  • Frequent need to urinate (frequency), urgent need to urinate (urgency) and Incontinence (urine leakage).

  • Painful urination (dysuria) and blood in the urine.

  • The need to urinate at night.

  • Abnormal urine color (cloudy urine) and strong or foul-smelling urine.

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