Although UTI symptoms vary, many people will experience:
- A strong, persistent desire to urinate
- A burning sensation during urination
- A cloudy, strong-smelling urine
- Lower back pain
Those with UTIs may also have pressure in the lower abdomen and small amounts of blood in the urine. If the UTI is more severe and/or has spread into the kidneys, it may cause flank pain, high fever, shaking, chills, nausea or vomiting. Fevers are also seen when the infection spreads into the blood (sepsis). Some people may also experience mental changes and confusion with a UTI, while others may not have any symptoms at all.