• A bacterial infectious process affecting any part of the urinary tract, most commonly the bladder and the urethra. Symptoms include urinary urgency and frequency, burning sensation during urination, lower abdominal discomfort, and cloudy urine.
  • A disorder characterized by an infectious process involving the urinary tract, most commonly the bladder and the urethra.
  • Infections affecting stuctures participating in the secretion and elimination of urine: the kidneys, ureters, urinary bladder and urethra.
  • Inflammatory responses of the epithelium of the urinary tract to microbial invasions. They are often bacterial infections with associated bacteriuria and pyuria.
  • The urinary system consists of the kidneys, ureters, bladder and urethra. Infections of the urinary tract (utis) are the second most common type of infection in the body. You may have a uti if you notice
    • pain or burning when you use the bathroom
    • fever, tiredness or shakiness
    • an urge to use the bathroom often
    • pressure in your lower belly
    • urine that smells bad or looks cloudy or reddish
    • less frequently, nausea or back pain
    if you think you have a uti, it is important to see your doctor. Your doctor can tell if you have a uti by testing a sample of your urine. Treatment with medicines to kill the infection will make it better, often in one or two days. nih: national institute of diabetes and digestive and kidney diseases