Urinary Tract Infections - Symptoms

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What are urinary tract infection symptoms and signs?

Lower urinary tract infection

  • Bladder (cystitis): The lining of the urethra and bladder becomes inflamed and irritated.
  • Dysuria: pain or burning during urination
  • Frequency: more frequent urination (or waking up at night to urinate, sometimes referred to as nocturia); often with only a small amount of urine
  • Urinary urgency: the sensation of having to urinate urgently
  • Cloudy, bad-smelling, or bloody urine
  • Lower abdominal pain or pelvic pressure
  • Mild fever (less than 101 F), chills, and "just not feeling well" (malaise)
  • Urethra (urethritis): Burning with urination

Upper urinary tract infection (pyelonephritis)

Symptoms develop rapidly and may or may not include the symptoms for a lower urinary tract infection.

  • Fairly high fever (higher than 101 F)
  • Shaking chills
  • Nausea
  • Vomiting
  • Flank pain: pain in the back or side, usually on only one side at about waist level

In newborns, infants, children, and elderly people, the classic symptoms of a urinary tract infection may not be present. Other symptoms may indicate a urinary tract infection.

  • Newborns: fever or hypothermia (low temperature), poor feeding, jaundice
  • Infants: vomiting, diarrhea, fever, poor feeding, not thriving
  • Children: irritability, eating poorly, unexplained fever that doesn't go away, loss of bowel control, loose bowels, change in urination pattern
  • Elderly people: fever or hypothermia, poor appetite, lethargy, change in mental status

Pregnant women are at increased risk for an UTI. Typically, pregnant women do not have unusual or unique symptoms. If a woman is pregnant, her urine should be checked during prenatal visits because an unrecognized infection can cause pregnancy complications.

Although most people have symptoms with a urinary tract infection, some do not.

The symptoms of urinary tract infection can resemble those of sexually transmitted diseases.

Return to Urinary Tract Infections (UTIs)

See what others are saying

Comment from: PitBullLover, 45-54 Female (Patient) Published: April 28

I recently was in the hospital with urinary tract infection (UTI). I had no pain or any kind of symptom except for having a slight fever for a few hours. That happened a week apart from each other. When I did start feeling bad I just wanted to sleep, I was sweating so bad that my clothes and my sheets were soaked. My husband and son tried to wake me and couldn't at first so I was taken to the hospital. By the time I got there I was already 80 percent dehydrated, my kidneys were shutting down and I was told that I was talking gibberish, making no sense at all. I spent 4 days in the hospital. I was diagnosed with UTI that spread to my bloodstream. If my husband and son had not gotten me to the hospital when they did, there is a good chance I would not be here typing this right now. What gets me, though, is how I got so sick with no symptoms to speak of! If it happens again, how will I know unless I have the symptoms everyone here has talked about!

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Comment from: Feelingill, 45-54 Female (Patient) Published: October 06

With urinary tract infection I am having pain and blood when I urinate.

Was this comment helpful?Yes


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