Urinary Tract Infection
A urinary tract infection (UTI) is an infection in the organs and tubes that process and carry urine out of the body. Most UTIs are either bladder infections (cystitis) or kidney infections (pyelonephritis).
UTIs occur most often when bacteria begin to grow in the kidneys, the bladder, the tubes that carry urine from the kidneys to the bladder (ureters), or the tube that carries urine from the bladder to outside of the body (urethra). Sexual intercourse may introduce bacteria into the urinary tract, especially in women. Catheterization is a common source of bacterial infection in people who are hospitalized or who live in long-term care facilities.
An adult or older child with a UTI may have:
Urinary tract infections are more common in women than in men.
Treatment for most urinary tract infections is antibiotic pills and home treatment, such as drinking lots of fluids. If widespread infection (sepsis) develops or if the infection is severe or harms kidney function, a hospital stay may be needed so that antibiotics can be given directly into a vein (intravenous antibiotics).
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