A UTI, or urinary tract infection, is an infection that occurs in any part of the urinary system of men or women. The urinary system includes the kidneys, bladders, ureters and the urethra, states Mayo Clinic.
According to Mayo Clinic, the majority of urinary tract infections occur in women and effect the lower part of the urinary tract. The symptoms of a urinary tract infection typically include a strong urge to urinate, a burning sensation when urinating, cloudy or bloody urine, or pelvic pain. A UTI may also produce a variety of other symptoms based on its location, states Mayo Clinic.