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.
Women are at greater risk of developing a UTI than are men. If an infection is limited to the bladder, it can be painful and annoying. But serious health problems can result if a UTI spreads to the kidneys.
Health care providers often treat urinary tract infections with antibiotics. You can also take steps to lower the chance of getting a UTI in the first place.
A strong urge to urinate that doesn't go away
A burning feeling when urinating
Urinating often, and passing small amounts of urine
Urine that looks cloudy
Urine that appears red, bright pink or cola-colored — signs of blood in the urine
Strong-smelling urine
Pelvic pain, in women — especially in the center of the pelvis and around the area of the pubic bone