What Are the Symptoms and Risk Factors of Pyelonephritis?

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Symptoms Signs and symptoms of a kidney infection might include:
  • Fever
  • Chills
  • Back, side (flank) or groin pain
  • Abdominal pain
  • Frequent urination
  • Strong, persistent urge to urinate
  • Burning sensation or pain when urinating
  • Nausea and vomiting
  • Pus or blood in your urine (hematuria)
  • Urine that smells bad or is cloudy
Risk factors Factors that increase your risk of a kidney infection include:
  • Being female. The urethra is shorter in women than it is in men, which makes it easier for bacteria to travel from outside the body to the bladder.
  • Having a urinary tract blockage.
  • Having a weakened immune system.
  • Having damage to nerves around the bladder.
  • Using a urinary catheter for a time.
  • Having a condition that causes urine to flow the wrong way.