UTI

What Is UTI?

A urinary tract infection (UTI) is an infection in any part of the urinary system. The urinary system includes the kidneys, ureters, bladder and urethra. Most infections involve the lower urinary tract — the bladder and the urethra.

Prevalence and Age Distribution

  • UTIs are common infections, affecting an estimated 150 million people worldwide annually.

  • In the United States, about 8 million people visit a doctor each year for a UTI.

  • Women are more likely to develop UTIs than men, with a lifetime risk of 60% compared to 12%.

  • UTIs are most common in young women (16-35 years old) and older adults (over 65 years old).

  • In women, the incidence peaks in the 18-24 and 65-74 age groups.

  • In men, the incidence increases steadily with age, especially after 65.

Common Symptoms

  • Pain or burning with urination

  • Frequent and strong urge to urinate, even when you only pass a small amount

  • Changes in urine appearance or smell, such as cloudy, strong-smelling, or bloody urine

  • Lower abdominal or pelvic pain or pressure